117915916 has 12 divisors (see below), whose sum is σ = 208480888. Its totient is φ = 58349952.

The previous prime is 117915907. The next prime is 117915923. The reversal of 117915916 is 619519711.

It is a super-2 number, since 2×117915916² = 27808326492238112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151566 + ... + 152341.

Almost surely, 2^117915916 is an apocalyptic number.

It is an amenable number.

117915916 is a deficient number, since it is larger than the sum of its proper divisors (90564972).

117915916 is a wasteful number, since it uses less digits than its factorization.

117915916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304008 (or 304006 counting only the distinct ones).

The product of its digits is 17010, while the sum is 40.

The square root of 117915916 is about 10858.9095216785. The cubic root of 117915916 is about 490.3702823809.

The spelling of 117915916 in words is "one hundred seventeen million, nine hundred fifteen thousand, nine hundred sixteen".