16,399
16,399 is a composite number, odd.
16,399 (sixteen thousand three hundred ninety-nine) is an odd 5-digit number. It is a composite number with 6 divisors, and factors as 23² × 31. Written other ways, in hexadecimal, 0x400F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 28
- Digit product
- 1,458
- Digital root
- 1
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 99,361
- Recamán's sequence
- a(17,914) = 16,399
- Square (n²)
- 268,927,201
- Cube (n³)
- 4,410,137,169,199
- Divisor count
- 6
- σ(n) — sum of divisors
- 17,696
- φ(n) — Euler's totient
- 15,180
- Sum of prime factors
- 77
Primality
Prime factorization: 23 2 × 31
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√16,399 = [128; (17, 14, 5, 1, 7, 1, 2, 2, 1, 4, 2, 2, 1, 2, 22, 1, 10, 1, 2, 5, 1, 9, 2, 2, …)]
Representations
- In words
- sixteen thousand three hundred ninety-nine
- Ordinal
- 16399th
- Binary
- 100000000001111
- Octal
- 40017
- Hexadecimal
- 0x400F
- Base64
- QA8=
- One's complement
- 49,136 (16-bit)
- Scientific notation
- 1.6399 × 10⁴
- As a duration
- 16,399 s = 4 hours, 33 minutes, 19 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιϛτϟθʹ
- Mayan (base 20)
- 𝋢·𝋠·𝋳·𝋳
- Chinese
- 一萬六千三百九十九
- Chinese (financial)
- 壹萬陸仟參佰玖拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,399 = 6
- e — Euler's number (e)
- Digit 16,399 = 3
- φ — Golden ratio (φ)
- Digit 16,399 = 4
- √2 — Pythagoras's (√2)
- Digit 16,399 = 3
- ln 2 — Natural log of 2
- Digit 16,399 = 2
- γ — Euler-Mascheroni (γ)
- Digit 16,399 = 8
Also seen as
UTF-8 encoding: E4 80 8F (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.64.15.
- Address
- 0.0.64.15
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.64.15
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 16,399 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C10 (16744 Hz, -36¢)
- Scientific pitch (C4 = 256 Hz): C10 (16384 Hz, +2¢)
- Baroque pitch (A4 = 415 Hz): C♯10 (16731.8 Hz, -35¢)
The digit sequence 16399 first appears in π at position 24,806 of the decimal expansion (the 24,806ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.