3,689
3,689 is a composite number, odd.
3,689 (three thousand six hundred eighty-nine) is an odd 4-digit number. It is a composite number with 8 divisors, and factors as 7 × 17 × 31. Written other ways, in Roman numerals it is MMMDCLXXXIX and in binary, 111001101001.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 26
- Digit product
- 1,296
- Digital root
- 8
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 9,863
- Recamán's sequence
- a(1,006) = 3,689
- Square (n²)
- 13,608,721
- Cube (n³)
- 50,202,571,769
- Divisor count
- 8
- σ(n) — sum of divisors
- 4,608
- φ(n) — Euler's totient
- 2,880
- Sum of prime factors
- 55
Primality
Prime factorization: 7 × 17 × 31
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√3,689 = [60; (1, 2, 1, 4, 9, 7, 2, 14, 1, 2, 1, 1, 6, 1, 1, 2, 1, 14, 2, 7, 9, 4, 1, 2, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- three thousand six hundred eighty-nine
- Ordinal
- 3689th
- Roman numeral
- MMMDCLXXXIX
- Binary
- 111001101001
- Octal
- 7151
- Hexadecimal
- 0xE69
- Base64
- Dmk=
- One's complement
- 61,846 (16-bit)
- Scientific notation
- 3.689 × 10³
- As a duration
- 3,689 s = 1 hour, 1 minute, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵γχπθʹ
- Mayan (base 20)
- 𝋩·𝋤·𝋩
- Chinese
- 三千六百八十九
- Chinese (financial)
- 參仟陸佰捌拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 3,689 = 5
- e — Euler's number (e)
- Digit 3,689 = 4
- φ — Golden ratio (φ)
- Digit 3,689 = 4
- √2 — Pythagoras's (√2)
- Digit 3,689 = 7
- ln 2 — Natural log of 2
- Digit 3,689 = 4
- γ — Euler-Mascheroni (γ)
- Digit 3,689 = 4
Also seen as
As an unsigned 32-bit integer, this is the IPv4 address 0.0.14.105.
- Address
- 0.0.14.105
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.14.105
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 3,689 Hz is closest to:
- Concert pitch (A4 = 440 Hz): A♯7 (3729.3 Hz, -19¢)
- Scientific pitch (C4 = 256 Hz): A♯7 (3649.1 Hz, +19¢)
- Baroque pitch (A4 = 415 Hz): B7 (3726.6 Hz, -18¢)
The digit sequence 3689 first appears in π at position 32,819 of the decimal expansion (the 32,819ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.