12912913 has 16 divisors (see below), whose sum is σ = 15281280. Its totient is φ = 10796544.

The previous prime is 12912901. The next prime is 12912919. The reversal of 12912913 is 31921921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12912913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12912919) 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, 4545 + ... + 6817.

It is an arithmetic number, because the mean of its divisors is an integer number (955080).

Almost surely, 2^12912913 is an apocalyptic number.

12912913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12912913 is the 2273-rd heptagonal number.

It is an amenable number.

12912913 is a deficient number, since it is larger than the sum of its proper divisors (2368367).

12912913 is a wasteful number, since it uses less digits than its factorization.

12912913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328.

The product of its digits is 972, while the sum is 28.

The square root of 12912913 is about 3593.4541878254. The cubic root of 12912913 is about 234.6072389099.

The spelling of 12912913 in words is "twelve million, nine hundred twelve thousand, nine hundred thirteen".