13,807
13,807 is a prime, odd.
13,807 (thirteen thousand eight hundred seven) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x35EF.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 70,831
- Recamán's sequence
- a(21,102) = 13,807
- Square (n²)
- 190,633,249
- Cube (n³)
- 2,632,073,268,943
- Divisor count
- 2
- σ(n) — sum of divisors
- 13,808
- φ(n) — Euler's totient
- 13,806
Primality
13,807 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,807 = [117; (1, 1, 77, 1, 5, 25, 1, 17, 8, 1, 1, 1, 5, 2, 1, 2, 4, 1, 1, 1, 2, 5, 2, 1, …)]
Representations
- In words
- thirteen thousand eight hundred seven
- Ordinal
- 13807th
- Binary
- 11010111101111
- Octal
- 32757
- Hexadecimal
- 0x35EF
- Base64
- Ne8=
- One's complement
- 51,728 (16-bit)
- Scientific notation
- 1.3807 × 10⁴
- As a duration
- 13,807 s = 3 hours, 50 minutes, 7 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγωζʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋪·𝋧
- Chinese
- 一萬三千八百零七
- Chinese (financial)
- 壹萬參仟捌佰零柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,807 = 4
- e — Euler's number (e)
- Digit 13,807 = 7
- φ — Golden ratio (φ)
- Digit 13,807 = 6
- √2 — Pythagoras's (√2)
- Digit 13,807 = 1
- ln 2 — Natural log of 2
- Digit 13,807 = 6
- γ — Euler-Mascheroni (γ)
- Digit 13,807 = 8
Also seen as
UTF-8 encoding: E3 97 AF (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.53.239.
- Address
- 0.0.53.239
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.53.239
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,807 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A9 (14080 Hz, -34¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, +4¢)
- Baroque pitch (A4 = 415 Hz): A♯9 (14069.7 Hz, -33¢)
The digit sequence 13807 first appears in π at position 95,954 of the decimal expansion (the 95,954ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.