117961958 has 4 divisors (see below), whose sum is σ = 176942940. Its totient is φ = 58980978.

The previous prime is 117961939. The next prime is 117961967. The reversal of 117961958 is 859169711.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29490488 + ... + 29490491.

It is an arithmetic number, because the mean of its divisors is an integer number (44235735).

Almost surely, 2^117961958 is an apocalyptic number.

117961958 is a deficient number, since it is larger than the sum of its proper divisors (58980982).

117961958 is an equidigital number, since it uses as much as digits as its factorization.

117961958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58980981.

The product of its digits is 136080, while the sum is 47.

The square root of 117961958 is about 10861.0293250686. The cubic root of 117961958 is about 490.4340981669.

The spelling of 117961958 in words is "one hundred seventeen million, nine hundred sixty-one thousand, nine hundred fifty-eight".