| Nominal | 4391 |
| Cardinal | four thousand three hundred ninety-one |
Cardinal four thousand three hundred ninety-one | |
| Ordinal | 4,391st |
| Number of digits | 4 |
| Sum of digits | 17 |
| Product of digits | 108 |
| Number parity | Odd |
| Prime factorization | 4391 |
| Prime factors | 4391 |
| Number of distinct prime factors ω(n) | 1 |
| Total number of prime factors Ω(n) | 1 |
| Sum of prime factors | 4391 |
| Product of prime factors | 4391 |
| Is 4391 a prime number? | Yes |
| Is 4391 a semiprime number? | No |
| Is 4391 a Chen prime number? | Yes |
| Is 4391 a Mersenne prime number? | No |
| Is 4391 a Catalan number? | No |
| Is 4391 a Fibonacci number? | No |
| Is 4391 a Idoneal number? | No |
| Square of 4391 (n2) | 19280881 |
| Cube of 4391 (n3) | 84662348471 |
| Square root of 4391 | 66.264621028117 |
| Natural Logarithm (ln) of 4391 | 8.3873122705617 |
| Decimal Logarithm (log) of 4391 | 3.6425634371044 |
| Sine of 4391 | -0.81139200687782 |
| Cosecant of 4391 | -1.2324499027886 |
| Cosine of 4391 | 0.58450236199248 |
| Secant of 4391 | 1.7108570726578 |
| Tangent of 4391 | -1.3881757536649 |
| Cotangent of 4391 | -0.72036987921733 |
| The spelling of 4391 in words is "four thousand three hundred ninety-one", meaning that: |
| 4391 is not an aban number (as it contains the letter a) |
| 4391 is not an eban number (as it contains the letter e) |
| 4391 is not an iban number (as it contains the letter i) |
| 4391 is not an oban number (as it contains the letter o) |
| 4391 is not a tban number (as it contains the letter t) |
| 4391 is not an uban number (as it contains the letter u) |
| Bengali numerals | ৪৩৯১ |
| Eastern Arabic numerals | ٤٬٣٩١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓆼𓆼𓆼𓆼𓍤𓎎𓏺 |
| Khmer numerals | ៤៣៩១ |
| Japanese numerals | 四千三百九十一 |
| Roman numerals | n/a |
| Thai numerals | ๔๓๙๑ |
| Arabic | أربعة آلاف و ثلاثة مائة و واحد و تسعون |
| Croatian | četiri tisuće tristo devedeset i jedan |
| Czech | čtyři tisíce tři sta devadesát jeden |
| Danish | fire tusinde tre hundrede en og halvfems |
| Dutch | vierduizend driehonderdéénennegentig |
| Estonian | akpe ene alafa etɔ̃ blaasieke vɔ ɖekɛ |
| Faroese | fýre tusin og trýhundraðognítiein |
| Filipino | ápat na libó’t tatlóng daán at siyám na pû’t isá |
| Finnish | neljätuhattakolmesataayhdeksänkymmentäyksi |
| French | quatre mille trois cent quatre-vingt-onze |
| Greek | τέσσερις χίλιάδες τριακόσια εννενήντα ένα |
| German | viertausenddreihunderteinundneunzig |
| Hebrew | ארבעת אלפים שלוש מאות תשעים ואחת |
| Hindi | चार हज़ार तीन सौ इक्यानबे |
| Hungarian | négyezerháromszázkilencvenegy |
| Icelandic | fjögur þúsund og þrjúhundrað og níutíu og einn |
| Indonesian | empat ribu tiga ratus sembilan puluh satu |
| Italian | quattromilatrecentonovantuno |
| Japanese | 四千三百九十一 |
| Korean | 사천삼백구십일 |
| Latvian | četrtūkstoš trīssimt deviņdesmit viens |
| Lithuanian | keturi tūkstančiai trys šimtai devyniasdešimt vienas |
| Norwegian | fire tusen tre hundre og nittién |
| Persian | چهار هزار و سیصد و نود و یک |
| Polish | cztery tysiące trzysta dziewięćdziesiąt jeden |
| Portuguese | quatro mil trezentos e noventa e um |
| Romanian | patru mii trei sute nouăzeci şi unu |
| Russian | четыре тысячи триста девяносто один |
| Serbian | четири хиљада триста деведесет и један |
| Slovak | štyri tisíc tristo deväťdesiatjeden |
| Slovene | štiri tisuće tristo devetdeset ena |
| Spanish | cuatro mil trescientos noventa y uno |
| Swahili | elfu nne, mia tatu na tisini na moja |
| Swedish | fyratusentrehundranittioen |
| Thai | สี่พันสามร้อยเก้าสิบเอ็ด |
| Turkish | dört bin üç yüz doksan bir |
| Ukrainian | чотири тисячі триста девʼяносто один |
| Vietnamese | bốn nghìn ba trăm chín mươi mốt |
| Number 4391 reversed | 1934 | |
| Unicode Character | U+1127 | ᄧ |
| Unix Timestamp | Thu, 01 Jan 1970 01:13:11 +0000 | |