117938907 has 24 divisors (see below), whose sum is σ = 172972800. Its totient is φ = 77429040.

The previous prime is 117938903. The next prime is 117938921. The reversal of 117938907 is 709839711.

It is not a de Polignac number, because 117938907 - 2² = 117938903 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (117938903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196594 + ... + 197192.

It is an arithmetic number, because the mean of its divisors is an integer number (7207200).

Almost surely, 2^117938907 is an apocalyptic number.

117938907 is a deficient number, since it is larger than the sum of its proper divisors (55033893).

117938907 is a wasteful number, since it uses less digits than its factorization.

117938907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 117938907 is about 10859.9680938758. The cubic root of 117938907 is about 490.4021507689.

The spelling of 117938907 in words is "one hundred seventeen million, nine hundred thirty-eight thousand, nine hundred seven".