117879957 has 24 divisors (see below), whose sum is σ = 184792608. Its totient is φ = 71978400.

The previous prime is 117879941. The next prime is 117879959. The reversal of 117879957 is 759978711.

It is not a de Polignac number, because 117879957 - 2⁴ = 117879941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117879959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11482 + ... + 19172.

It is an arithmetic number, because the mean of its divisors is an integer number (7699692).

Almost surely, 2^117879957 is an apocalyptic number.

It is an amenable number.

117879957 is a deficient number, since it is larger than the sum of its proper divisors (66912651).

117879957 is a wasteful number, since it uses less digits than its factorization.

117879957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7841 (or 7838 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 54.

The square root of 117879957 is about 10857.2536582692. The cubic root of 117879957 is about 490.3204304233.

The spelling of 117879957 in words is "one hundred seventeen million, eight hundred seventy-nine thousand, nine hundred fifty-seven".