115904921 has 8 divisors (see below), whose sum is σ = 133096800. Its totient is φ = 99822240.

The previous prime is 115904903. The next prime is 115904923. The reversal of 115904921 is 129409511.

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

It is a cyclic number.

It is not a de Polignac number, because 115904921 - 2¹⁰ = 115903897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115904923) 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 in 7 ways as a sum of consecutive naturals, for example, 277076 + ... + 277493.

It is an arithmetic number, because the mean of its divisors is an integer number (16637100).

Almost surely, 2^115904921 is an apocalyptic number.

115904921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115904921 is a deficient number, since it is larger than the sum of its proper divisors (17191879).

115904921 is a wasteful number, since it uses less digits than its factorization.

115904921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554599.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 115904921 is about 10765.9147776675. The cubic root of 115904921 is about 487.5666125062.

The spelling of 115904921 in words is "one hundred fifteen million, nine hundred four thousand, nine hundred twenty-one".