139,009
139,009 is a composite number, odd.
139,009 (one hundred thirty-nine thousand nine) is an odd 6-digit number. It is a composite number with 12 divisors, and factors as 13 × 17² × 37. Written other ways, in hexadecimal, 0x21F01.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 900,931
- Recamán's sequence
- a(490,809) = 139,009
- Square (n²)
- 19,323,502,081
- Cube (n³)
- 2,686,140,700,777,729
- Divisor count
- 12
- σ(n) — sum of divisors
- 163,324
- φ(n) — Euler's totient
- 117,504
- Sum of prime factors
- 84
Primality
Prime factorization: 13 × 17 2 × 37
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,009 = [372; (1, 5, 4, 1, 1, 1, 4, 3, 1, 4, 2, 2, 2, 5, 1, 3, 1, 29, 29, 1, 3, 1, 5, 2, …)]
Period length 37 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-nine thousand nine
- Ordinal
- 139009th
- Binary
- 100001111100000001
- Octal
- 417401
- Hexadecimal
- 0x21F01
- Base64
- Ah8B
- One's complement
- 4,294,828,286 (32-bit)
- Scientific notation
- 1.39009 × 10⁵
- As a duration
- 139,009 s = 1 day, 14 hours, 36 minutes, 49 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλθθʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋪·𝋩
- Chinese
- 一十三萬九千零九
- Chinese (financial)
- 壹拾參萬玖仟零玖
Also seen as
UTF-8 encoding: F0 A1 BC 81 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.1.
- Address
- 0.2.31.1
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.1
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 139,009 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 139009 first appears in π at position 1,186 of the decimal expansion (the 1,186ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.