139,988
139,988 is a composite number, even.
139,988 (one hundred thirty-nine thousand nine hundred eighty-eight) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 79 × 443. Written other ways, in hexadecimal, 0x222D4.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 38
- Digit product
- 15,552
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 889,931
- Recamán's sequence
- a(488,851) = 139,988
- Square (n²)
- 19,596,640,144
- Cube (n³)
- 2,743,294,460,478,272
- Divisor count
- 12
- σ(n) — sum of divisors
- 248,640
- φ(n) — Euler's totient
- 68,952
- Sum of prime factors
- 526
Primality
Prime factorization: 2 2 × 79 × 443
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,988 = [374; (6, 1, 2, 8, 17, 3, 1, 1, 5, 1, 7, 2, 1, 1, 1, 56, 1, 14, 3, 2, 6, 3, 1, 46, …)]
Representations
- In words
- one hundred thirty-nine thousand nine hundred eighty-eight
- Ordinal
- 139988th
- Binary
- 100010001011010100
- Octal
- 421324
- Hexadecimal
- 0x222D4
- Base64
- AiLU
- One's complement
- 4,294,827,307 (32-bit)
- Scientific notation
- 1.39988 × 10⁵
- As a duration
- 139,988 s = 1 day, 14 hours, 53 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλθϡπηʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋳·𝋨
- Chinese
- 一十三萬九千九百八十八
- Chinese (financial)
- 壹拾參萬玖仟玖佰捌拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139988, here are decompositions:
- 7 + 139981 = 139988
- 19 + 139969 = 139988
- 67 + 139921 = 139988
- 97 + 139891 = 139988
- 127 + 139861 = 139988
- 151 + 139837 = 139988
- 157 + 139831 = 139988
- 229 + 139759 = 139988
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 8B 94 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.34.212.
- Address
- 0.2.34.212
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.34.212
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 139,988 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 139988 first appears in π at position 76,859 of the decimal expansion (the 76,859ordinal-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.