117961089 has 16 divisors (see below), whose sum is σ = 164668032. Its totient is φ = 74970368.

The previous prime is 117961061. The next prime is 117961091. The reversal of 117961089 is 980169711.

It is a cyclic number.

It is not a de Polignac number, because 117961089 - 2⁵ = 117961057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117961089.

It is not an unprimeable number, because it can be changed into a prime (117961189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19177 + ... + 24569.

It is an arithmetic number, because the mean of its divisors is an integer number (10291752).

Almost surely, 2^117961089 is an apocalyptic number.

It is an amenable number.

117961089 is a deficient number, since it is larger than the sum of its proper divisors (46706943).

117961089 is a wasteful number, since it uses less digits than its factorization.

117961089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5736.

The product of its (nonzero) digits is 27216, while the sum is 42.

The square root of 117961089 is about 10860.9893195786. The cubic root of 117961089 is about 490.4328938569.

The spelling of 117961089 in words is "one hundred seventeen million, nine hundred sixty-one thousand, eighty-nine".