117639873 has 48 divisors (see below), whose sum is σ = 190590400. Its totient is φ = 69455232.

The previous prime is 117639857. The next prime is 117639883. The reversal of 117639873 is 378936711.

117639873 is a `hidden beast` number, since 1 + 1 + 7 + 639 + 8 + 7 + 3 = 666.

It is not a de Polignac number, because 117639873 - 2⁴ = 117639857 is a prime.

It is a super-2 number, since 2×117639873² = 27678279438912258, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117639803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336903 + ... + 337251.

Almost surely, 2^117639873 is an apocalyptic number.

117639873 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

117639873 is a deficient number, since it is larger than the sum of its proper divisors (72950527).

117639873 is a wasteful number, since it uses less digits than its factorization.

117639873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 475 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 117639873 is about 10846.1916357770. The cubic root of 117639873 is about 489.9873285631.

The spelling of 117639873 in words is "one hundred seventeen million, six hundred thirty-nine thousand, eight hundred seventy-three".