12913539 has 8 divisors (see below), whose sum is σ = 17294160. Its totient is φ = 8570976.

The previous prime is 12913529. The next prime is 12913541. The reversal of 12913539 is 93531921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12913539 - 2⁸ = 12913283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12913529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8712 + ... + 10085.

It is an arithmetic number, because the mean of its divisors is an integer number (2161770).

Almost surely, 2^12913539 is an apocalyptic number.

12913539 is a deficient number, since it is larger than the sum of its proper divisors (4380621).

12913539 is a wasteful number, since it uses less digits than its factorization.

12913539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19029.

The product of its digits is 7290, while the sum is 33.

The square root of 12913539 is about 3593.5412895916. The cubic root of 12913539 is about 234.6110299924.

The spelling of 12913539 in words is "twelve million, nine hundred thirteen thousand, five hundred thirty-nine".