117971994 has 32 divisors (see below), whose sum is σ = 272180736. Its totient is φ = 33390000.

The previous prime is 117971983. The next prime is 117972053. The reversal of 117971994 is 499179711.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8632 + ... + 17619.

It is an arithmetic number, because the mean of its divisors is an integer number (8505648).

Almost surely, 2^117971994 is an apocalyptic number.

117971994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

117971994 is an abundant number, since it is smaller than the sum of its proper divisors (154208742).

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

117971994 is a wasteful number, since it uses less digits than its factorization.

117971994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26370.

The product of its digits is 142884, while the sum is 48.

The square root of 117971994 is about 10861.4913340664. The cubic root of 117971994 is about 490.4480062016.

The spelling of 117971994 in words is "one hundred seventeen million, nine hundred seventy-one thousand, nine hundred ninety-four".