139,490
139,490 is a composite number, even.
139,490 (one hundred thirty-nine thousand four hundred ninety) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 5 × 13 × 29 × 37. Its proper divisors sum to 147,790, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x220E2.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 94,931
- Recamán's sequence
- a(489,847) = 139,490
- Square (n²)
- 19,457,460,100
- Cube (n³)
- 2,714,121,109,349,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 287,280
- φ(n) — Euler's totient
- 48,384
- Sum of prime factors
- 86
Primality
Prime factorization: 2 × 5 × 13 × 29 × 37
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,490 = [373; (2, 14, 1, 2, 1, 10, 1, 2, 1, 14, 2, 746)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand four hundred ninety
- Ordinal
- 139490th
- Binary
- 100010000011100010
- Octal
- 420342
- Hexadecimal
- 0x220E2
- Base64
- AiDi
- One's complement
- 4,294,827,805 (32-bit)
- Scientific notation
- 1.3949 × 10⁵
- As a duration
- 139,490 s = 1 day, 14 hours, 44 minutes, 50 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλθυϟʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋮·𝋪
- Chinese
- 一十三萬九千四百九十
- Chinese (financial)
- 壹拾參萬玖仟肆佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139490, here are decompositions:
- 3 + 139487 = 139490
- 7 + 139483 = 139490
- 31 + 139459 = 139490
- 61 + 139429 = 139490
- 67 + 139423 = 139490
- 97 + 139393 = 139490
- 103 + 139387 = 139490
- 151 + 139339 = 139490
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 83 A2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.32.226.
- Address
- 0.2.32.226
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.32.226
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 139,490 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 139490 first appears in π at position 264,807 of the decimal expansion (the 264,807ordinal-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.