13,985
13,985 is a composite number, odd.
13,985 (thirteen thousand nine hundred eighty-five) is an odd 5-digit number. It is a composite number with 4 divisors, and factors as 5 × 2,797. Written other ways, in hexadecimal, 0x36A1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 26
- Digit product
- 1,080
- Digital root
- 8
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 58,931
- Recamán's sequence
- a(20,746) = 13,985
- Square (n²)
- 195,580,225
- Cube (n³)
- 2,735,189,446,625
- Divisor count
- 4
- σ(n) — sum of divisors
- 16,788
- φ(n) — Euler's totient
- 11,184
- Sum of prime factors
- 2,802
Primality
Prime factorization: 5 × 2797
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,985 = [118; (3, 1, 6, 1, 7, 3, 1, 1, 20, 1, 13, 1, 4, 1, 5, 12, 3, 1, 1, 1, 1, 2, 2, 1, …)]
Period length 45 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand nine hundred eighty-five
- Ordinal
- 13985th
- Binary
- 11011010100001
- Octal
- 33241
- Hexadecimal
- 0x36A1
- Base64
- NqE=
- One's complement
- 51,550 (16-bit)
- Scientific notation
- 1.3985 × 10⁴
- As a duration
- 13,985 s = 3 hours, 53 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιγϡπεʹ
- Mayan (base 20)
- 𝋡·𝋮·𝋳·𝋥
- Chinese
- 一萬三千九百八十五
- Chinese (financial)
- 壹萬參仟玖佰捌拾伍
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,985 = 9
- e — Euler's number (e)
- Digit 13,985 = 8
- φ — Golden ratio (φ)
- Digit 13,985 = 4
- √2 — Pythagoras's (√2)
- Digit 13,985 = 0
- ln 2 — Natural log of 2
- Digit 13,985 = 6
- γ — Euler-Mascheroni (γ)
- Digit 13,985 = 1
Also seen as
UTF-8 encoding: E3 9A A1 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.54.161.
- Address
- 0.0.54.161
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.54.161
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,985 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A9 (14080 Hz, -12¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, +26¢)
- Baroque pitch (A4 = 415 Hz): A♯9 (14069.7 Hz, -10¢)
The digit sequence 13985 first appears in π at position 76,673 of the decimal expansion (the 76,673ordinal-suffix:rd 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.