113839815 has 16 divisors (see below), whose sum is σ = 182458368. Its totient is φ = 60609696.

The previous prime is 113839753. The next prime is 113839853. The reversal of 113839815 is 518938311.

It is not a de Polignac number, because 113839815 - 2⁶ = 113839751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2854 + ... + 15356.

It is an arithmetic number, because the mean of its divisors is an integer number (11403648).

Almost surely, 2^113839815 is an apocalyptic number.

113839815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

113839815 is a deficient number, since it is larger than the sum of its proper divisors (68618553).

113839815 is a wasteful number, since it uses less digits than its factorization.

113839815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13118.

The product of its digits is 25920, while the sum is 39.

The square root of 113839815 is about 10669.5742651710. The cubic root of 113839815 is about 484.6535450405.

The spelling of 113839815 in words is "one hundred thirteen million, eight hundred thirty-nine thousand, eight hundred fifteen".