117663889 has 16 divisors (see below), whose sum is σ = 138733056. Its totient is φ = 97704000.

The previous prime is 117663857. The next prime is 117663893. The reversal of 117663889 is 988366711.

It is a cyclic number.

It is not a de Polignac number, because 117663889 - 2⁵ = 117663857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117663829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31459 + ... + 34999.

It is an arithmetic number, because the mean of its divisors is an integer number (8670816).

Almost surely, 2^117663889 is an apocalyptic number.

It is an amenable number.

117663889 is a deficient number, since it is larger than the sum of its proper divisors (21069167).

117663889 is a wasteful number, since it uses less digits than its factorization.

117663889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696.

The product of its digits is 435456, while the sum is 49.

The square root of 117663889 is about 10847.2986959888. The cubic root of 117663889 is about 490.0206696820.

The spelling of 117663889 in words is "one hundred seventeen million, six hundred sixty-three thousand, eight hundred eighty-nine".