13113939 has 16 divisors (see below), whose sum is σ = 17870112. Its totient is φ = 8552448.

The previous prime is 13113931. The next prime is 13113983. The reversal of 13113939 is 93931131.

It is a happy number.

It is not a de Polignac number, because 13113939 - 2³ = 13113931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13113931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50899 + ... + 51155.

It is an arithmetic number, because the mean of its divisors is an integer number (1116882).

Almost surely, 2^13113939 is an apocalyptic number.

13113939 is a deficient number, since it is larger than the sum of its proper divisors (4756173).

13113939 is a wasteful number, since it uses less digits than its factorization.

13113939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566.

The product of its digits is 2187, while the sum is 30.

The square root of 13113939 is about 3621.3173017564. The cubic root of 13113939 is about 235.8184170110.

The spelling of 13113939 in words is "thirteen million, one hundred thirteen thousand, nine hundred thirty-nine".