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6,409

6,409 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Arithmetic Number Deficient Number Happy Number Odious Number Pernicious Number Recamán's Sequence Sphenic Number Squarefree

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

Nearest primes: 6,397 (−12) · 6,421 (+12)

Divisors & multiples

All divisors (8)
1 · 13 · 17 · 29 · 221 · 377 · 493 · 6409
Aliquot sum (sum of proper divisors): 1,151
Factor pairs (a × b = 6,409)
1 × 6409
13 × 493
17 × 377
29 × 221
First multiples
6,409 · 12,818 (double) · 19,227 · 25,636 · 32,045 · 38,454 · 44,863 · 51,272 · 57,681 · 64,090

Sums & aliquot sequence

As a sum of two squares: 3² + 80² = 28² + 75² = 35² + 72² = 53² + 60²
As consecutive integers: 3,204 + 3,205 487 + 488 + … + 499 369 + 370 + … + 385 234 + 235 + … + 259
Aliquot sequence: 6,409 1,151 1 0 — terminates at zero

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)
In other bases
ternary (3) 22210101
quaternary (4) 1210021
quinary (5) 201114
senary (6) 45401
septenary (7) 24454
nonary (9) 8711
undecimal (11) 48a7
duodecimal (12) 3861
tridecimal (13) 2bc0
tetradecimal (14) 249b
pentadecimal (15) 1d74

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
In other modern scripts
Eastern Arabic ٦٤٠٩ Devanagari ६४०९ Bengali ৬৪০৯ Tamil ௬௪௦௯ Thai ๖๔๐๙ Tibetan ༦༤༠༩ Khmer ៦៤០៩ Lao ໖໔໐໙ Burmese ၆၄၀၉

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

Unicode codepoint
Limbu Letter Jha
U+1909
Other letter (Lo)

UTF-8 encoding: E1 A4 89 (3 bytes).

Hex color
#001909
RGB(0, 25, 9)
IPv4 address

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.

Position in π

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.