Japan Lucky Numbers Guide: 7, 8 and the Unlucky 4 — What Numbers Mean in Japan
Numbers carry powerful cultural meanings in Japan. Four (shi) sounds like the word for death, nine (ku) echoes suffering, while eight (hachi) symbolises expanding fortune and seven is embraced by the Seven Lucky Gods. This guide explains the origins of Japanese number superstitions, how they affect hotel floors and hospital rooms, what to avoid when giving gifts, and how lucky numbers shape business names, sports culture, and New Year traditions across the country.
The Origin of Tetraphobia: Why 4 Means Death in Japan
The most pervasive number superstition in Japan — and across much of East Asia — is tetraphobia: an aversion to the number four rooted in a phonetic coincidence that has shaped architecture, medicine, gift-giving, and daily life for over a thousand years. In Japanese, the number four can be read two ways: the native Japanese reading "yo" (よ) and the Sino-Japanese reading "shi" (し). That second reading is identical to the Japanese word for death (死, shi) — a homophone collision that made four deeply inauspicious in a culture shaped by both Buddhist attitudes to mortality and Shinto notions of ritual purity and impurity. The association was imported from China along with the Chinese writing system and Buddhist texts during the Nara period (710–794 CE), and it found especially fertile ground in Japan's existing cultural concern with death pollution (kegare, 穢れ). By the Heian period (794–1185), the avoidance of the number four in formal contexts was already well established among the aristocracy, and it gradually permeated popular culture over the following centuries. The reading "shi" for four is actively avoided in everyday speech — Japanese speakers overwhelmingly prefer "yo" when counting objects, referring to dates (April 4th = "shigatsu yokka" rather than "shigatsu shika"), or saying the number casually. The Sino-Japanese "shi" is largely confined to formal numerical contexts (number lines, mathematics, compound words) where the death association is contextually suppressed. The nine (9) similarly carries a secondary unlucky reading: "ku" (く), which sounds like the word for suffering or agony (苦, ku) — giving Japan two numerically unlucky numbers that translate to the worst possible outcomes: death and suffering. This double liability means that combinations of four and nine — 49, 94, 49 — are considered particularly inauspicious, and phone numbers, licence plates, and ID numbers ending in these combinations are actively avoided by many Japanese people.
Lucky 7: Shichi-Fuku-Jin, Pachinko Culture and the Seventh Day
Seven is broadly regarded as a lucky number in Japan, though the cultural basis differs from Western lucky-seven traditions (which derive from dice probability and Christian symbolism). The Japanese affinity for seven is most explicitly expressed in the Seven Lucky Gods (Shichi-Fuku-Jin, 七福神) — a group of deities drawn from Shinto, Buddhism, and Hinduism who collectively bestow the seven kinds of happiness: longevity, fortune, popularity, candour, amiability, dignity, and magnanimity. The Seven Lucky Gods are a perennial motif in Japanese decorative art, New Year's imagery, and temple iconography: Ebisu (god of fishing and commerce), Daikokuten (wealth and harvests), Bishamonten (warriors and treasure), Benzaiten (arts and knowledge), Fukurokuju (wisdom and longevity), Jurojin (long life), and Hotei (happiness and abundance). Pilgrimage routes visiting all seven temples or shrines dedicated to these deities exist in most major Japanese cities — the Yanaka Seven Lucky Gods route in Tokyo and the Kyoto Shichi-Fuku-Jin course being among the most popular with both domestic and foreign visitors. In the context of pachinko and slot machine culture — a legal grey area that constitutes Japan's largest leisure industry by revenue at approximately 14 trillion yen annually — the number seven takes on another significance. The "777" combination (triple seven, referred to as "big jackpot" in pachinko parlors across the country) is the universal jackpot symbol, immediately recognizable from the flashing lights and sound effects of pachislot machines. Pachinko machine manufacturers spend enormous resources on the audiovisual language of seven-based jackpot sequences, embedding the lucky-seven concept deep into the leisure culture of working-age Japanese adults. Seven also appears in funeral customs: the formal mourning period ends on the 49th day (shijukunichi, 四十九日, seven times seven) after death — a number that collapses the unlucky four with the lucky seven in a complex ritual numerology. Major Buddhist memorial services are held at seven-day intervals (nanoka-ki, 七日忌) through the 49-day mourning period.
Lucky 8: Why Japanese Businesses Love Hachi
Eight (八, hachi) is considered Japan's most auspicious number from a visual and structural standpoint, with a logic completely different from the phonetic basis of four's unluckiness. The kanji for eight (八) widens toward the bottom — a shape that visually suggests expansion, growth, and broadening prospects, much like a fan opening outward or a river delta spreading toward the sea. This visual symbolism of "expanding fortune" (suehirogari, 末広がり — literally "widening toward the end") made eight a preferred number in commercial naming, pricing, and date selection throughout Japanese history. The preference is visible throughout the Japanese business landscape. Phone numbers ending in 8888 command premium prices on the Japanese secondary market. Prices set at 8,888 yen or 88,800 yen appear more frequently in Japanese retail than statistical distribution would predict. Major companies launch products and sign contracts on dates with 8 prominently featured. The Shinkansen timetable has historically been arranged to include departures at 08:08 from major stations as a deliberate good-luck signal to passengers. The Asakusa area of Tokyo is particularly associated with hachi-numerology: the temple complex is served by local bus route 8, and vendors near Senso-ji Temple sell lottery tickets (takarakuji) in quantities of eight as a standard good-luck bundle. In Chinese-influenced Japanese festival culture (particularly during the Edo period when commercial exchange with China was most intense), the eight cardinal and intercardinal directions of the compass (hasshu, 八方) were associated with comprehensive good fortune — the phrase "happyaku" (八百, eight hundred) was used to mean "uncountable abundance" in the same way English uses "a million." The Japanese idiom "happo-yoshi" (八方良し, "good in all eight directions") is still used in business contexts to mean an outcome that satisfies all parties — the Japanese equivalent of "win-win" but with an explicitly numerical and cosmological flavour.
Missing Floors: How Numbers Shape Japanese Hotels and Hospitals
The most immediately visible consequence of tetraphobia for foreign visitors to Japan is the systematic absence of floor numbers containing four — and sometimes nine — from the floor numbering of hotels, hospitals, apartment buildings, and office towers. The practice is not legally mandated but has become so normalized in the Japanese building industry that its absence would be remarkable. In a typical Japanese hotel (particularly business hotels and mid-range chains like Toyoko Inn, Dormy Inn, and Route Inn), the floor plan will skip from floor 3 to floor 5, eliminating Floor 4 entirely. Higher floors often skip both 4 and 14 (which contains the shi reading), and some buildings additionally skip Floor 9 for the "ku" (suffering) association. In hospitals, the avoidance is even more systematic: the combination of sick patients, anxiety about mortality, and the cultural sensitivity of medical environments makes hospital administrators particularly thorough in eliminating four-numbered floors, wards, and rooms. Room numbers 4, 14, 24, 40–49, and 400–499 are routinely absent from Japanese hospital room numbering systems, replaced by alternative designations or simply jumped over. The practical consequence for building design is that a 15-story building with floors 4 and 14 removed physically has 15 stories of habitable space but is numbered up to 17. Elevator panels in such buildings are notable for their missing buttons — a detail that invariably surprises foreign visitors encountering it for the first time. The avoidance extends to intensive care: the number 42 (shi-ni, 四二) can be read as "death-to" or "leading to death," and 43 (shi-zan, 四三) sounds like "stillbirth" — both are particularly avoided in maternity wards and pediatric units. Gift shops near hospitals will often not sell items in quantities of four, and some will additionally avoid nine-unit packages.
Numbers in Gift-Giving: What to Give and What to Avoid
Japanese gift-giving is governed by a complex etiquette system (omiyage culture, 御土産文化) in which the numerical quantity of items in a gift set carries significant meaning — and the avoidance of unlucky numbers is as important as choosing an appropriate gift in the first place. The cardinal rule: never give a Japanese person a gift containing exactly four items, and ideally avoid nine items as well. This applies to food gifts (never give four mochi, four pieces of wagashi, a four-piece sake set), decorative items, practical goods, and flowers. The custom is particularly important in formal gift-giving contexts — business gifts (temiyage, 手土産), seasonal gifts (ochugen in summer, oseibo in winter), condolence gifts, and wedding gifts. Wedding gifts are governed by a further numerical rule: cash gifts (goshugi, ご祝儀, which are the standard Japanese wedding gift) should never be given in amounts divisible by two, because a divisible sum implies the couple might split (割れる, wareru — "to split/divide"). Common amounts are 30,000 yen (san-man), 50,000 yen (go-man), or 100,000 yen (juu-man) — never 20,000 or 40,000. The preferred numbers for gift quantities are three (symbolizing stability), five (the five elements and the traditional division of Japanese society), seven, and eight. High-end wagashi confectioneries (particularly Kyoto houses like Toraya, established 1526, and Tsuruya Yoshinobu) configure their gift boxes in quantities of three, five, six, seven, nine (avoiding the ku reading by using the alternative "kokonotsu"), and eight — never four. Souvenir shops at popular temples will stock their premium omamori (お守り, protective amulets) in bundles explicitly designed to be given as lucky gifts: sets of three, seven, or eight. The custom of giving "en" (縁, connection/relationship) by giving odd numbers (which cannot be evenly divided and therefore imply an unbroken connection) underpins much Japanese gift quantity logic.
Sports and Number Superstitions: Uniforms, Lottery Tickets and New Year
Number superstitions permeate Japanese sports culture in ways that are simultaneously serious and playfully self-aware. In baseball — Japan's most popular spectator sport — the number 4 is as consistently absent from team rosters as floor four is from hotel elevator panels. Across the twelve teams of Nippon Professional Baseball (NPB), jersey number 4 is assigned with notable reluctance: many teams have had it permanently retired without a specific player retiring it, or assign it only when a star player specifically requests the number to demonstrate personal indifference to superstition (itself a kind of brand statement). The Yomiuri Giants, the most storied franchise in Japanese baseball, retired number 4 in honor of Tetsuharu Kawakami, using the retirement as both an honor and a convenient reason to keep the number out of circulation. Sumo, Japan's national sport and deeply embedded in Shinto cosmology, employs a complex ring-entering ceremony (dohyo-iri, 土俵入り) in which the wrestlers perform ritual movements in groups and sequences structured around numerically auspicious counts — never four. The annual New Year's hatsumode (初詣, first shrine visit of the year) generates enormous lottery ticket sales, with the New Year Jumbo Takarakuji (宝くじ) consistently selling out. Purchasers routinely select tickets ending in 7, 8, or combinations thereof, and ticket retailers near major shrines (particularly Zojo-ji in Tokyo and Naritasan Shinshoji Temple in Narita) see premium prices for "lucky number" tickets on the secondary market. The number 108 — the count of human worldly desires in Buddhist teaching, struck as the joya no kane (除夜の鐘, New Year's Eve bell) at temples across Japan — combines one (unity), zero (emptiness), and eight (expanding fortune) into a number considered to encapsulate the entire universe of spiritual significance. Many Japanese sports teams schedule training camps to avoid February 4th, April 9th, and similar "double unlucky" dates before major competitions.
Frequently Asked Questions
Is the number 4 really avoided in Japan?
Yes, extensively. Hotels, hospitals, apartments, and office buildings regularly omit Floor 4 (and sometimes Floor 14) from their numbering systems. Gift sets almost never contain exactly four items. Room numbers 4, 14, 24, and 40–49 are frequently skipped in hospitals. The avoidance stems from the Sino-Japanese reading of four as "shi" (し) — identical to the word for death (死). The practice is so normalized that its absence would be more surprising than its presence. Visitors staying in Japanese hotels will often notice elevator panels jumping from 3 to 5, or from 13 to 15.
Which floor numbers are commonly missing in Japanese hotels?
The most commonly absent floors are 4 and 14, with some hotels also skipping Floor 9 (for the "ku" = suffering reading) and Floor 13 (the Western unlucky number, adopted in international-facing hotels). High-rise buildings in central Tokyo and Osaka increasingly skip 4, 9, 13, 14, and in some cases 40–49 as an entire zone. Budget business hotel chains (Toyoko Inn, APA Hotel) typically only skip Floor 4; luxury international-brand hotels (Park Hyatt, Conrad) may retain Floor 4 to conform to their global numbering system, sometimes adding a floor-specific note in the elevator about the alternative numering.
How does number avoidance affect Japanese room numbers?
Japanese room numbers follow the same logic as floor numbers — rooms ending in 4 (104, 204, 304, etc.) are the most commonly skipped, replaced by jumping from 103 to 105. In hospitals, the avoidance is most systematic: rooms 4, 14, 24, 40–49 are regularly absent, and specialist wards (particularly maternity units) additionally avoid 42 (which can read as "shi-ni," leading to death) and 43 ("shi-zan," stillbirth). In practice, guests assigned to rooms in the 100s or 200s of a Japanese hotel will notice their room number skips from X03 to X05.
What are the luckiest numbers for a Japanese business?
Eight (八, hachi) is the single most auspicious number for Japanese business, valued for the visual symbolism of its kanji character widening at the bottom (suehirogari, expanding fortune). Phone numbers with multiple eights command premium prices. Seven is broadly lucky via the Seven Lucky Gods (Shichi-Fuku-Jin) association. Three is considered stable and complete. For pricing, amounts like 8,888 yen, 38,000 yen, or 88,800 yen appear disproportionately often in Japanese retail. Business launches on the 8th of the month or on dates whose digits sum to eight are common.
Can you buy a lucky phone number in Japan?
Yes. Mobile phone numbers are not subject to the same portability restrictions as in some Western countries, and the secondary market for "lucky number" phone numbers (particularly those ending in 8888, 777, 1111, or multiples of eight) is active in Japan. SoftBank, NTT Docomo, and AU periodically release premium number options. Numbers containing 4444, 4949, or similar unlucky combinations may be listed at a discount on secondary marketplaces, though many Japanese buyers actively avoid them regardless of cost savings. For landlines, NTT offers a service allowing customers to select numbers from available pools, and numbers with strong lucky associations are noticeably more popular.
Plan your Japan trip with cultural insight
Include Asakusa's lucky shopping streets, New Year's lottery culture, and the Seven Lucky Gods pilgrimage route in your personalised Japan itinerary.
Generate My Japan Itinerary