13,390
13,390 is a composite number, even.
13,390 (thirteen thousand three hundred ninety) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 13 × 103. Written other ways, in hexadecimal, 0x344E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 14 bits
- Reversed
- 9,331
- Recamán's sequence
- a(47,495) = 13,390
- Square (n²)
- 179,292,100
- Cube (n³)
- 2,400,721,219,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 26,208
- φ(n) — Euler's totient
- 4,896
- Sum of prime factors
- 123
Primality
Prime factorization: 2 × 5 × 13 × 103
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√13,390 = [115; (1, 2, 1, 1, 22, 1, 1, 2, 1, 230)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- thirteen thousand three hundred ninety
- Ordinal
- 13390th
- Binary
- 11010001001110
- Octal
- 32116
- Hexadecimal
- 0x344E
- Base64
- NE4=
- One's complement
- 52,145 (16-bit)
- Scientific notation
- 1.339 × 10⁴
- As a duration
- 13,390 s = 3 hours, 43 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιγτϟʹ
- Mayan (base 20)
- 𝋡·𝋭·𝋩·𝋪
- Chinese
- 一萬三千三百九十
- Chinese (financial)
- 壹萬參仟參佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 13,390 = 5
- e — Euler's number (e)
- Digit 13,390 = 8
- φ — Golden ratio (φ)
- Digit 13,390 = 4
- √2 — Pythagoras's (√2)
- Digit 13,390 = 4
- ln 2 — Natural log of 2
- Digit 13,390 = 0
- γ — Euler-Mascheroni (γ)
- Digit 13,390 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 13390, here are decompositions:
- 23 + 13367 = 13390
- 53 + 13337 = 13390
- 59 + 13331 = 13390
- 131 + 13259 = 13390
- 149 + 13241 = 13390
- 173 + 13217 = 13390
- 227 + 13163 = 13390
- 239 + 13151 = 13390
Showing the first eight; more decompositions exist.
UTF-8 encoding: E3 91 8E (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.52.78.
- Address
- 0.0.52.78
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.52.78
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 13,390 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G♯9 (13289.8 Hz, +13¢)
- Scientific pitch (C4 = 256 Hz): A9 (13777.2 Hz, -49¢ — about midway to G♯9)
- Baroque pitch (A4 = 415 Hz): A9 (13280 Hz, +14¢)
The digit sequence 13390 first appears in π at position 1,985 of the decimal expansion (the 1,985ordinal-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.