5,009
5,009 is a prime, odd.
5,009 (five thousand nine) is an odd 4-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x1391.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 9,005
- Recamán's sequence
- a(97,578) = 5,009
- Square (n²)
- 25,090,081
- Cube (n³)
- 125,676,215,729
- Divisor count
- 2
- σ(n) — sum of divisors
- 5,010
- φ(n) — Euler's totient
- 5,008
Primality
5,009 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√5,009 = [70; (1, 3, 2, 3, 10, 1, 1, 2, 19, 1, 4, 1, 2, 2, 5, 1, 2, 1, 2, 3, 1, 2, 8, 2, …)]
Representations
- In words
- five thousand nine
- Ordinal
- 5009th
- Binary
- 1001110010001
- Octal
- 11621
- Hexadecimal
- 0x1391
- Base64
- E5E=
- One's complement
- 60,526 (16-bit)
- Scientific notation
- 5.009 × 10³
- As a duration
- 5,009 s = 1 hour, 23 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵εθʹ
- Mayan (base 20)
- 𝋬·𝋪·𝋩
- Chinese
- 五千零九
- Chinese (financial)
- 伍仟零玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 5,009 = 3
- e — Euler's number (e)
- Digit 5,009 = 1
- φ — Golden ratio (φ)
- Digit 5,009 = 2
- √2 — Pythagoras's (√2)
- Digit 5,009 = 1
- ln 2 — Natural log of 2
- Digit 5,009 = 1
- γ — Euler-Mascheroni (γ)
- Digit 5,009 = 9
Also seen as
UTF-8 encoding: E1 8E 91 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.19.145.
- Address
- 0.0.19.145
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.19.145
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 5,009 Hz is closest to:
- Concert pitch (A4 = 440 Hz): D♯8 (4978 Hz, +11¢)
- Scientific pitch (C4 = 256 Hz): D♯8 (4871 Hz, +48¢ — about midway to E8)
- Baroque pitch (A4 = 415 Hz): E8 (4974.4 Hz, +12¢)
The digit sequence 5009 first appears in π at position 21,029 of the decimal expansion (the 21,029ordinal-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.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.