117616979 has 4 divisors (see below), whose sum is σ = 117680376. Its totient is φ = 117553584.

The previous prime is 117616957. The next prime is 117617029. The reversal of 117616979 is 979616711.

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

It is a cyclic number.

It is not a de Polignac number, because 117616979 - 2¹⁶ = 117551443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117616679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28829 + ... + 32654.

It is an arithmetic number, because the mean of its divisors is an integer number (29420094).

Almost surely, 2^117616979 is an apocalyptic number.

117616979 is a deficient number, since it is larger than the sum of its proper divisors (63397).

117616979 is an equidigital number, since it uses as much as digits as its factorization.

117616979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63396.

The product of its digits is 142884, while the sum is 47.

The square root of 117616979 is about 10845.1361909383. The cubic root of 117616979 is about 489.9555408781.

The spelling of 117616979 in words is "one hundred seventeen million, six hundred sixteen thousand, nine hundred seventy-nine".