Number
40,009
40,009 is a prime, odd.
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 90,004
- Square (n²)
- 1,600,720,081
- Cube (n³)
- 64,043,209,720,729
- Divisor count
- 2
- σ(n) — sum of divisors
- 40,010
- φ(n) — Euler's totient
- 40,008
Primality
40,009 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Aliquot sum (sum of proper divisors):
1
First multiples
40,009
·
80,018
(double)
·
120,027
·
160,036
·
200,045
·
240,054
·
280,063
·
320,072
·
360,081
·
400,090
Sums & aliquot sequence
As a sum of two squares:
3² + 200²
As consecutive integers:
20,004 + 20,005
Representations
- In words
- forty thousand nine
- Ordinal
- 40009th
- Binary
- 1001110001001001
- Octal
- 116111
- Hexadecimal
- 0x9C49
- Base64
- nEk=
- One's complement
- 25,526 (16-bit)
In other bases
ternary (3)
2000212211
quaternary (4)
21301021
quinary (5)
2240014
senary (6)
505121
septenary (7)
224434
nonary (9)
60784
undecimal (11)
28072
duodecimal (12)
1b1a1
tridecimal (13)
15298
tetradecimal (14)
1081b
pentadecimal (15)
bcc4
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μθʹ
- Mayan (base 20)
- 𝋥·𝋠·𝋠·𝋩
- Chinese
- 四萬零九
- Chinese (financial)
- 肆萬零玖
In other modern scripts
Eastern Arabic
٤٠٠٠٩
Devanagari
४०००९
Bengali
৪০০০৯
Tamil
௪௦௦௦௯
Thai
๔๐๐๐๙
Tibetan
༤༠༠༠༩
Khmer
៤០០០៩
Lao
໔໐໐໐໙
Burmese
၄၀၀၀၉
Digit at this position in famous constants
- π — Pi (π)
- Digit 40,009 = 5
- e — Euler's number (e)
- Digit 40,009 = 2
- φ — Golden ratio (φ)
- Digit 40,009 = 5
- √2 — Pythagoras's (√2)
- Digit 40,009 = 1
- ln 2 — Natural log of 2
- Digit 40,009 = 9
- γ — Euler-Mascheroni (γ)
- Digit 40,009 = 7
Also seen as
Prime neighborhood
Unicode codepoint
鱉
CJK Unified Ideograph-9C49
U+9C49
Other letter (Lo)
UTF-8 encoding: E9 B1 89 (3 bytes).
Hex color
#009C49
RGB(0, 156, 73)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.156.73.
- Address
- 0.0.156.73
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.156.73
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Position in π
The digit sequence 40009 first appears in π at position 95,966 of the decimal expansion (the 95,966ordinal-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.