13137439 has 12 divisors (see below), whose sum is σ = 15948144. Its totient is φ = 10770144.

The previous prime is 13137437. The next prime is 13137457. The reversal of 13137439 is 93473131.

It is not a de Polignac number, because 13137439 - 2¹ = 13137437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13137439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13137437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4702 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (1329012).

Almost surely, 2^13137439 is an apocalyptic number.

13137439 is a deficient number, since it is larger than the sum of its proper divisors (2810705).

13137439 is a wasteful number, since it uses less digits than its factorization.

13137439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694 (or 11687 counting only the distinct ones).

The product of its digits is 6804, while the sum is 31.

The square root of 13137439 is about 3624.5605250844. The cubic root of 13137439 is about 235.9591940843.

The spelling of 13137439 in words is "thirteen million, one hundred thirty-seven thousand, four hundred thirty-nine".