115889857 has 2 divisors, whose sum is σ = 115889858. Its totient is φ = 115889856.

The previous prime is 115889843. The next prime is 115889861. The reversal of 115889857 is 758988511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108139201 + 7750656 = 10399^2 + 2784^2 .

It is a cyclic number.

It is not a de Polignac number, because 115889857 - 2¹⁵ = 115857089 is a prime.

It is not a weakly prime, because it can be changed into another prime (115889057) 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 as a sum of consecutive naturals, namely, 57944928 + 57944929.

It is an arithmetic number, because the mean of its divisors is an integer number (57944929).

Almost surely, 2^115889857 is an apocalyptic number.

It is an amenable number.

115889857 is a deficient number, since it is larger than the sum of its proper divisors (1).

115889857 is an equidigital number, since it uses as much as digits as its factorization.

115889857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 52.

The square root of 115889857 is about 10765.2151395130. The cubic root of 115889857 is about 487.5454888081.

The spelling of 115889857 in words is "one hundred fifteen million, eight hundred eighty-nine thousand, eight hundred fifty-seven".