115858999 has 2 divisors, whose sum is σ = 115859000. Its totient is φ = 115858998.

The previous prime is 115858991. The next prime is 115859011. The reversal of 115858999 is 999858511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115858999 - 2³ = 115858991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115858991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57929499 + 57929500.

It is an arithmetic number, because the mean of its divisors is an integer number (57929500).

Almost surely, 2^115858999 is an apocalyptic number.

115858999 is a deficient number, since it is larger than the sum of its proper divisors (1).

115858999 is an equidigital number, since it uses as much as digits as its factorization.

115858999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 55.

The square root of 115858999 is about 10763.7818168151. The cubic root of 115858999 is about 487.5022120434.

The spelling of 115858999 in words is "one hundred fifteen million, eight hundred fifty-eight thousand, nine hundred ninety-nine".