| Nominal | 13921 |
| Cardinal | thirteen thousand nine hundred twenty-one |
Cardinal thirteen thousand nine hundred twenty-one | |
| Ordinal | 13,921st |
| Number of digits | 5 |
| Sum of digits | 16 |
| Product of digits | 54 |
| Number parity | Odd |
| Prime factorization | 13921 |
| Prime factors | 13921 |
| Number of distinct prime factors ω(n) | 1 |
| Total number of prime factors Ω(n) | 1 |
| Sum of prime factors | 13921 |
| Product of prime factors | 13921 |
| Is 13921 a prime number? | Yes |
| Is 13921 a semiprime number? | No |
| Is 13921 a Chen prime number? | No |
| Is 13921 a Mersenne prime number? | No |
| Is 13921 a Catalan number? | No |
| Is 13921 a Fibonacci number? | No |
| Is 13921 a Idoneal number? | No |
| Square of 13921 (n2) | 193794241 |
| Cube of 13921 (n3) | 2697809628961 |
| Square root of 13921 | 117.98728745081 |
| Natural Logarithm (ln) of 13921 | 9.5411537703886 |
| Decimal Logarithm (log) of 13921 | 4.1436704334702 |
| Sine of 13921 | -0.56707635392721 |
| Cosecant of 13921 | -1.7634309614122 |
| Cosine of 13921 | -0.82366522860724 |
| Secant of 13921 | -1.2140854867589 |
| Tangent of 13921 | 0.68847917118717 |
| Cotangent of 13921 | 1.4524767659647 |
| The spelling of 13921 in words is "thirteen thousand nine hundred twenty-one", meaning that: |
| 13921 is not an aban number (as it contains the letter a) |
| 13921 is not an eban number (as it contains the letter e) |
| 13921 is not an iban number (as it contains the letter i) |
| 13921 is not an oban number (as it contains the letter o) |
| 13921 is not a tban number (as it contains the letter t) |
| 13921 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১৩৯২১ |
| Eastern Arabic numerals | ١٣٬٩٢١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓆼𓆼𓍪𓎇𓏺 |
| Khmer numerals | ១៣៩២១ |
| Japanese numerals | 一万三千九百二十一 |
| Roman numerals | n/a |
| Thai numerals | ๑๓๙๒๑ |
| Arabic | ثلاثة عشر ألف و تسعة مائة و واحد و عشرون |
| Croatian | trinaest tisuća devetsto dvadeset i jedan |
| Czech | třináct tisíc devět set dvacet jeden |
| Danish | tretten tusinde ni hundrede en og tyve |
| Dutch | dertienduizend negenhonderdéénentwintig |
| Estonian | akpe wuietɔ̃ alafa asieke blaeve vɔ ɖekɛ |
| Faroese | trettan tusin og níggjuhundraðogtjúgoein |
| Filipino | labíng-tatlóng libó’t siyám na daán at dalawáng pû’t isá |
| Finnish | kolmetoistatuhattayhdeksänsataakaksikymmentäyksi |
| French | treize mille neuf cent vingt et un |
| Greek | δεκατρεις χίλιάδες εννιακόσια είκοσι ένα |
| German | dreizehntausendneunhunderteinundzwanzig |
| Hebrew | שלושה עשר אלף תשע מאות עשרים ואחת |
| Hindi | तेरह हज़ार नौ सौ इक्कीस |
| Hungarian | tizenháromezerkilencszázhuszonegy |
| Icelandic | þrettán þúsund og níuhundrað og tuttugu og einn |
| Indonesian | tiga belas ribu sembilan ratus dua puluh satu |
| Italian | tredicimilanovecentoventuno |
| Japanese | 一万三千九百二十一 |
| Korean | 만 삼천구백이십일 |
| Latvian | trīspadsmit tūkstoši deviņsimt divdesmit viens |
| Lithuanian | trylika tūkstančių devyni šimtai dvidešimt vienas |
| Norwegian | tretten tusen ni hundre og tjueén |
| Persian | سیزده هزار و نهصد و بیست و یک |
| Polish | trzynaście tysięcy dziewięćset dwadzieścia jeden |
| Portuguese | treze mil novecentos e vinte e um |
| Romanian | treisprezece mii nouă sute douăzeci şi unu |
| Russian | тринадцать тысяч девятьсот двадцать один |
| Serbian | тринаест хиљада деветсто двадесет и један |
| Slovak | trinásť tisíc deväťsto dvadsaťjeden |
| Slovene | trinajst tisuću devetsto dvaset ena |
| Spanish | trece mil novecientos veintiuno |
| Swahili | elfu kumi na tatu, mia tisa na ishirini na moja |
| Swedish | trettontusenniohundratjugoen |
| Thai | หนึ่งหมื่นสามพันเก้าร้อยยี่สิบเอ็ด |
| Turkish | on üç bin dokuz yüz yirmi bir |
| Ukrainian | тринадцять тисяч девʼятсот двадцять один |
| Vietnamese | mười ba nghìn chín trăm hai mươi mốt |
| Number 13921 reversed | 12931 | |
| Unicode Character | U+3661 | 㙡 |
| Unix Timestamp | Thu, 01 Jan 1970 03:52:01 +0000 | |