115899558 has 8 divisors (see below), whose sum is σ = 231799128. Its totient is φ = 38633184.

The previous prime is 115899529. The next prime is 115899569. The reversal of 115899558 is 855998511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

115899558 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 115899558.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9658291 + ... + 9658302.

It is an arithmetic number, because the mean of its divisors is an integer number (28974891).

Almost surely, 2^115899558 is an apocalyptic number.

115899558 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115899558 is a wasteful number, since it uses less digits than its factorization.

115899558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19316598.

The product of its digits is 648000, while the sum is 51.

The square root of 115899558 is about 10765.6657016647. The cubic root of 115899558 is about 487.5590923766.

The spelling of 115899558 in words is "one hundred fifteen million, eight hundred ninety-nine thousand, five hundred fifty-eight".