13456539 has 24 divisors (see below), whose sum is σ = 20014592. Its totient is φ = 8709120.

The previous prime is 13456529. The next prime is 13456561. The reversal of 13456539 is 93565431.

It is not a de Polignac number, because 13456539 - 2⁵ = 13456507 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13456529) 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 23 ways as a sum of consecutive naturals, for example, 69627 + ... + 69819.

Almost surely, 2^13456539 is an apocalyptic number.

13456539 is a deficient number, since it is larger than the sum of its proper divisors (6558053).

13456539 is a wasteful number, since it uses less digits than its factorization.

13456539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 384 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 13456539 is about 3668.3155534932. The cubic root of 13456539 is about 237.8543644479.

The spelling of 13456539 in words is "thirteen million, four hundred fifty-six thousand, five hundred thirty-nine".