139,664
139,664 is a composite number, even.
139,664 (one hundred thirty-nine thousand six hundred sixty-four) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 7 × 29 × 43. Its proper divisors sum to 187,696, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x22190.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 3,888
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 466,931
- Recamán's sequence
- a(489,499) = 139,664
- Square (n²)
- 19,506,032,896
- Cube (n³)
- 2,724,290,578,386,944
- Divisor count
- 40
- σ(n) — sum of divisors
- 327,360
- φ(n) — Euler's totient
- 56,448
- Sum of prime factors
- 87
Primality
Prime factorization: 2 4 × 7 × 29 × 43
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,664 = [373; (1, 2, 1, 1, 8, 1, 3, 2, 1, 1, 1, 29, 3, 1, 2, 1, 1, 2, 106, 2, 1, 1, 2, 1, …)]
Period length 38 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand six hundred sixty-four
- Ordinal
- 139664th
- Binary
- 100010000110010000
- Octal
- 420620
- Hexadecimal
- 0x22190
- Base64
- AiGQ
- One's complement
- 4,294,827,631 (32-bit)
- Scientific notation
- 1.39664 × 10⁵
- As a duration
- 139,664 s = 1 day, 14 hours, 47 minutes, 44 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλθχξδʹ
- Mayan (base 20)
- 𝋱·𝋩·𝋣·𝋤
- Chinese
- 一十三萬九千六百六十四
- Chinese (financial)
- 壹拾參萬玖仟陸佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 139664, here are decompositions:
- 3 + 139661 = 139664
- 37 + 139627 = 139664
- 67 + 139597 = 139664
- 73 + 139591 = 139664
- 127 + 139537 = 139664
- 163 + 139501 = 139664
- 181 + 139483 = 139664
- 241 + 139423 = 139664
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A2 86 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.33.144.
- Address
- 0.2.33.144
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.33.144
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 139,664 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 139664 first appears in π at position 569,156 of the decimal expansion (the 569,156ordinal-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.