115158889 has 2 divisors, whose sum is σ = 115158890. Its totient is φ = 115158888.

The previous prime is 115158881. The next prime is 115158899. The reversal of 115158889 is 988851511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108993600 + 6165289 = 10440^2 + 2483^2 .

It is a cyclic number.

It is not a de Polignac number, because 115158889 - 2³ = 115158881 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115158881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57579444 + 57579445.

It is an arithmetic number, because the mean of its divisors is an integer number (57579445).

Almost surely, 2^115158889 is an apocalyptic number.

It is an amenable number.

115158889 is a deficient number, since it is larger than the sum of its proper divisors (1).

115158889 is an equidigital number, since it uses as much as digits as its factorization.

115158889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 115200, while the sum is 46.

The square root of 115158889 is about 10731.2109754678. The cubic root of 115158889 is about 486.5182718782.

The spelling of 115158889 in words is "one hundred fifteen million, one hundred fifty-eight thousand, eight hundred eighty-nine".