117947916 has 18 divisors (see below), whose sum is σ = 298146212. Its totient is φ = 39315960.

The previous prime is 117947911. The next prime is 117947917. The reversal of 117947916 is 619749711.

117947916 is a `hidden beast` number, since 1 + 179 + 479 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (117947911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1638130 + ... + 1638201.

Almost surely, 2^117947916 is an apocalyptic number.

It is an amenable number.

117947916 is an abundant number, since it is smaller than the sum of its proper divisors (180198296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117947916 is a wasteful number, since it uses less digits than its factorization.

117947916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276341 (or 3276336 counting only the distinct ones).

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

The square root of 117947916 is about 10860.3828661793. The cubic root of 117947916 is about 490.4146372350.

The spelling of 117947916 in words is "one hundred seventeen million, nine hundred forty-seven thousand, nine hundred sixteen".