13137939 has 6 divisors (see below), whose sum is σ = 18977036. Its totient is φ = 8758620.

The previous prime is 13137931. The next prime is 13137941. The reversal of 13137939 is 93973131.

13137939 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13137939 - 2³ = 13137931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13137931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 729877 + ... + 729894.

Almost surely, 2^13137939 is an apocalyptic number.

13137939 is a deficient number, since it is larger than the sum of its proper divisors (5839097).

13137939 is a wasteful number, since it uses less digits than its factorization.

13137939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459777 (or 1459774 counting only the distinct ones).

The product of its digits is 15309, while the sum is 36.

The square root of 13137939 is about 3624.6294983074. The cubic root of 13137939 is about 235.9621875166.

The spelling of 13137939 in words is "thirteen million, one hundred thirty-seven thousand, nine hundred thirty-nine".