117715939 has 24 divisors (see below), whose sum is σ = 138756240. Its totient is φ = 99432960.

The previous prime is 117715937. The next prime is 117715951. The reversal of 117715939 is 939517711.

It is not a de Polignac number, because 117715939 - 2¹ = 117715937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 117715895 and 117715904.

It is not an unprimeable number, because it can be changed into a prime (117715937) 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, 182752 + ... + 183394.

It is an arithmetic number, because the mean of its divisors is an integer number (5781510).

Almost surely, 2^117715939 is an apocalyptic number.

117715939 is a deficient number, since it is larger than the sum of its proper divisors (21040301).

117715939 is a wasteful number, since it uses less digits than its factorization.

117715939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771 (or 760 counting only the distinct ones).

The product of its digits is 59535, while the sum is 43.

The square root of 117715939 is about 10849.6976455568. The cubic root of 117715939 is about 490.0929144919.

The spelling of 117715939 in words is "one hundred seventeen million, seven hundred fifteen thousand, nine hundred thirty-nine".