9,988
9,988 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 34
- Digital root
- 7
- Palindrome
- No
- Reversed
- 8,899
- Flips to (rotate 180°)
- 8,866
- Divisor count
- 12
- σ(n) — sum of divisors
- 19,152
Primality
Prime factorization: 2 2 × 11 × 227
Divisors & multiples
Representations
- In words
- nine thousand nine hundred eighty-eight
- Ordinal
- 9988th
- Binary
- 10011100000100
- Octal
- 23404
- Hexadecimal
- 0x2704
- Base64
- JwQ=
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 9988, here are decompositions:
- 47 + 9941 = 9988
- 59 + 9929 = 9988
- 101 + 9887 = 9988
- 131 + 9857 = 9988
- 137 + 9851 = 9988
- 149 + 9839 = 9988
- 197 + 9791 = 9988
- 239 + 9749 = 9988
Showing the first eight; more decompositions exist.
UTF-8 encoding: E2 9C 84 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.39.4.
- Address
- 0.0.39.4
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.39.4
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.