117439923 has 16 divisors (see below), whose sum is σ = 160744320. Its totient is φ = 76226304.

The previous prime is 117439919. The next prime is 117439939. The reversal of 117439923 is 329934711.

It is not a de Polignac number, because 117439923 - 2² = 117439919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117439123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44248 + ... + 46826.

It is an arithmetic number, because the mean of its divisors is an integer number (10046520).

Almost surely, 2^117439923 is an apocalyptic number.

117439923 is a deficient number, since it is larger than the sum of its proper divisors (43304397).

117439923 is a wasteful number, since it uses less digits than its factorization.

117439923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978.

The product of its digits is 40824, while the sum is 39.

The square root of 117439923 is about 10836.9701946623. The cubic root of 117439923 is about 489.7095641060.

The spelling of 117439923 in words is "one hundred seventeen million, four hundred thirty-nine thousand, nine hundred twenty-three".