113579921 has 32 divisors (see below), whose sum is σ = 146012160. Its totient is φ = 85929984.

The previous prime is 113579909. The next prime is 113579951. The reversal of 113579921 is 129975311.

It is not a de Polignac number, because 113579921 - 2¹⁴ = 113563537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113579951) 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 31 ways as a sum of consecutive naturals, for example, 509216 + ... + 509438.

It is an arithmetic number, because the mean of its divisors is an integer number (4562880).

Almost surely, 2^113579921 is an apocalyptic number.

It is an amenable number.

113579921 is a deficient number, since it is larger than the sum of its proper divisors (32432239).

113579921 is a wasteful number, since it uses less digits than its factorization.

113579921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its digits is 17010, while the sum is 38.

The square root of 113579921 is about 10657.3880946506. The cubic root of 113579921 is about 484.2844459287.

The spelling of 113579921 in words is "one hundred thirteen million, five hundred seventy-nine thousand, nine hundred twenty-one".