138,984
138,984 is a composite number, even.
138,984 (one hundred thirty-eight thousand nine hundred eighty-four) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2³ × 3 × 5,791. Its proper divisors sum to 208,536, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21EE8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 33
- Digit product
- 6,912
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 489,831
- Recamán's sequence
- a(490,859) = 138,984
- Square (n²)
- 19,316,552,256
- Cube (n³)
- 2,684,691,698,747,904
- Divisor count
- 16
- σ(n) — sum of divisors
- 347,520
- φ(n) — Euler's totient
- 46,320
- Sum of prime factors
- 5,800
Primality
Prime factorization: 2 3 × 3 × 5791
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,984 = [372; (1, 4, 6, 1, 31, 1, 1, 3, 1, 9, 2, 3, 2, 1, 1, 2, 1, 1, 1, 1, 1, 18, 49, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand nine hundred eighty-four
- Ordinal
- 138984th
- Binary
- 100001111011101000
- Octal
- 417350
- Hexadecimal
- 0x21EE8
- Base64
- Ah7o
- One's complement
- 4,294,828,311 (32-bit)
- Scientific notation
- 1.38984 × 10⁵
- As a duration
- 138,984 s = 1 day, 14 hours, 36 minutes, 24 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληϡπδʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋩·𝋤
- Chinese
- 一十三萬八千九百八十四
- Chinese (financial)
- 壹拾參萬捌仟玖佰捌拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138984, here are decompositions:
- 7 + 138977 = 138984
- 17 + 138967 = 138984
- 47 + 138937 = 138984
- 61 + 138923 = 138984
- 67 + 138917 = 138984
- 101 + 138883 = 138984
- 163 + 138821 = 138984
- 191 + 138793 = 138984
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 BB A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.30.232.
- Address
- 0.2.30.232
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.30.232
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 138,984 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 138984 first appears in π at position 524,682 of the decimal expansion (the 524,682ordinal-suffix:nd 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.