113889919 has 24 divisors (see below), whose sum is σ = 142778160. Its totient is φ = 89928960.

The previous prime is 113889907. The next prime is 113889943. The reversal of 113889919 is 919988311.

It is a happy number.

It is not a de Polignac number, because 113889919 - 2⁷ = 113889791 is a prime.

It is a super-2 number, since 2×113889919² = 25941827299653122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113889949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24612 + ... + 28870.

It is an arithmetic number, because the mean of its divisors is an integer number (5949090).

Almost surely, 2^113889919 is an apocalyptic number.

113889919 is a deficient number, since it is larger than the sum of its proper divisors (28888241).

113889919 is a wasteful number, since it uses less digits than its factorization.

113889919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311 (or 4300 counting only the distinct ones).

The product of its digits is 139968, while the sum is 49.

The square root of 113889919 is about 10671.9219918438. The cubic root of 113889919 is about 484.7246376822.

The spelling of 113889919 in words is "one hundred thirteen million, eight hundred eighty-nine thousand, nine hundred nineteen".