117909956 has 24 divisors (see below), whose sum is σ = 212793504. Its totient is φ = 57133440.

The previous prime is 117909941. The next prime is 117910007. The reversal of 117909956 is 659909711.

It is a self number, because there is not a number n which added to its sum of digits gives 117909956.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19916 + ... + 25148.

It is an arithmetic number, because the mean of its divisors is an integer number (8866396).

Almost surely, 2^117909956 is an apocalyptic number.

It is an amenable number.

117909956 is a deficient number, since it is larger than the sum of its proper divisors (94883548).

117909956 is a wasteful number, since it uses less digits than its factorization.

117909956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411 (or 5409 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 47.

The square root of 117909956 is about 10858.6350891813. The cubic root of 117909956 is about 490.3620204028.

The spelling of 117909956 in words is "one hundred seventeen million, nine hundred nine thousand, nine hundred fifty-six".