6,409
6,409 is a composite number, odd.
6,409 (six thousand four hundred nine) is an odd 4-digit number. It is a composite number with 8 divisors, and factors as 13 × 17 × 29. Written other ways, in hexadecimal, 0x1909.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 9,046
- Recamán's sequence
- a(27,082) = 6,409
- Square (n²)
- 41,075,281
- Cube (n³)
- 263,251,475,929
- Divisor count
- 8
- σ(n) — sum of divisors
- 7,560
- φ(n) — Euler's totient
- 5,376
- Sum of prime factors
- 59
Primality
Prime factorization: 13 × 17 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√6,409 = [80; (17, 1, 3, 1, 1, 1, 2, 2, 1, 1, 1, 3, 1, 17, 160)]
Period length 15 — the block in parentheses repeats forever.
Representations
- In words
- six thousand four hundred nine
- Ordinal
- 6409th
- Binary
- 1100100001001
- Octal
- 14411
- Hexadecimal
- 0x1909
- Base64
- GQk=
- One's complement
- 59,126 (16-bit)
- Scientific notation
- 6.409 × 10³
- As a duration
- 6,409 s = 1 hour, 46 minutes, 49 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ϛυθʹ
- Mayan (base 20)
- 𝋰·𝋠·𝋩
- Chinese
- 六千四百零九
- Chinese (financial)
- 陸仟肆佰零玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 6,409 = 0
- e — Euler's number (e)
- Digit 6,409 = 7
- φ — Golden ratio (φ)
- Digit 6,409 = 3
- √2 — Pythagoras's (√2)
- Digit 6,409 = 8
- ln 2 — Natural log of 2
- Digit 6,409 = 7
- γ — Euler-Mascheroni (γ)
- Digit 6,409 = 5
Also seen as
UTF-8 encoding: E1 A4 89 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.25.9.
- Address
- 0.0.25.9
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.25.9
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 6,409 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G8 (6271.9 Hz, +37¢)
- Scientific pitch (C4 = 256 Hz): G♯8 (6502 Hz, -25¢)
- Baroque pitch (A4 = 415 Hz): G♯8 (6267.3 Hz, +39¢)
The digit sequence 6409 first appears in π at position 6,332 of the decimal expansion (the 6,332ordinal-suffix:nd 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.