117615889 has 2 divisors, whose sum is σ = 117615890. Its totient is φ = 117615888.

The previous prime is 117615881. The next prime is 117615893. The reversal of 117615889 is 988516711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117007489 + 608400 = 10817^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 117615889 - 2³ = 117615881 is a prime.

It is not a weakly prime, because it can be changed into another prime (117615881) 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 as a sum of consecutive naturals, namely, 58807944 + 58807945.

It is an arithmetic number, because the mean of its divisors is an integer number (58807945).

Almost surely, 2^117615889 is an apocalyptic number.

It is an amenable number.

117615889 is a deficient number, since it is larger than the sum of its proper divisors (1).

117615889 is an equidigital number, since it uses as much as digits as its factorization.

117615889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 46.

The square root of 117615889 is about 10845.0859378799. The cubic root of 117615889 is about 489.9540273404.

The spelling of 117615889 in words is "one hundred seventeen million, six hundred fifteen thousand, eight hundred eighty-nine".