113959881 has 12 divisors (see below), whose sum is σ = 188124352. Its totient is φ = 65119896.

The previous prime is 113959873. The next prime is 113959897. The reversal of 113959881 is 188959311.

It is not a de Polignac number, because 113959881 - 2³ = 113959873 is a prime.

It is a super-2 number, since 2×113959881² = 25973708955068322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113959801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 904381 + ... + 904506.

Almost surely, 2^113959881 is an apocalyptic number.

It is an amenable number.

113959881 is a deficient number, since it is larger than the sum of its proper divisors (74164471).

113959881 is a wasteful number, since it uses less digits than its factorization.

113959881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808900 (or 1808897 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 113959881 is about 10675.1993424011. The cubic root of 113959881 is about 484.8238719946.

The spelling of 113959881 in words is "one hundred thirteen million, nine hundred fifty-nine thousand, eight hundred eighty-one".