12917629 has 4 divisors (see below), whose sum is σ = 12928860. Its totient is φ = 12906400.

The previous prime is 12917627. The next prime is 12917633. The reversal of 12917629 is 92671921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 828100 + 12089529 = 910^2 + 3477^2 .

It is a cyclic number.

It is not a de Polignac number, because 12917629 - 2¹ = 12917627 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3664 + ... + 6265.

It is an arithmetic number, because the mean of its divisors is an integer number (3232215).

Almost surely, 2^12917629 is an apocalyptic number.

It is an amenable number.

12917629 is a deficient number, since it is larger than the sum of its proper divisors (11231).

12917629 is an equidigital number, since it uses as much as digits as its factorization.

12917629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11230.

The product of its digits is 13608, while the sum is 37.

The square root of 12917629 is about 3594.1103210670. The cubic root of 12917629 is about 234.6357961913.

The spelling of 12917629 in words is "twelve million, nine hundred seventeen thousand, six hundred twenty-nine".