12413639 has 4 divisors (see below), whose sum is σ = 14187024. Its totient is φ = 10640256.

The previous prime is 12413633. The next prime is 12413641. The reversal of 12413639 is 93631421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93631421 = 13 ⋅7202417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12413639 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 (12413633) 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, 886682 + ... + 886695.

It is an arithmetic number, because the mean of its divisors is an integer number (3546756).

Almost surely, 2^12413639 is an apocalyptic number.

12413639 is a deficient number, since it is larger than the sum of its proper divisors (1773385).

12413639 is an equidigital number, since it uses as much as digits as its factorization.

12413639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773384.

The product of its digits is 3888, while the sum is 29.

The square root of 12413639 is about 3523.2994479607. The cubic root of 12413639 is about 231.5437364011.

The spelling of 12413639 in words is "twelve million, four hundred thirteen thousand, six hundred thirty-nine".