117908879 has 8 divisors (see below), whose sum is σ = 134220672. Its totient is φ = 102529240.

The previous prime is 117908831. The next prime is 117908909. The reversal of 117908879 is 978809711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-117908879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117901879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232769 + ... + 233274.

It is an arithmetic number, because the mean of its divisors is an integer number (16777584).

Almost surely, 2^117908879 is an apocalyptic number.

117908879 is a deficient number, since it is larger than the sum of its proper divisors (16311793).

117908879 is a wasteful number, since it uses less digits than its factorization.

117908879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466077.

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 117908879 is about 10858.5854971999. The cubic root of 117908879 is about 490.3605273949.

The spelling of 117908879 in words is "one hundred seventeen million, nine hundred eight thousand, eight hundred seventy-nine".