12364439 has 4 divisors (see below), whose sum is σ = 12404256. Its totient is φ = 12324624.

The previous prime is 12364433. The next prime is 12364441. The reversal of 12364439 is 93446321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93446321 = 5851 ⋅15971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12364439 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 (12364433) 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, 19439 + ... + 20064.

It is an arithmetic number, because the mean of its divisors is an integer number (3101064).

Almost surely, 2^12364439 is an apocalyptic number.

12364439 is a deficient number, since it is larger than the sum of its proper divisors (39817).

12364439 is an equidigital number, since it uses as much as digits as its factorization.

12364439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39816.

The product of its digits is 15552, while the sum is 32.

The square root of 12364439 is about 3516.3104242942. The cubic root of 12364439 is about 231.2374325773.

The spelling of 12364439 in words is "twelve million, three hundred sixty-four thousand, four hundred thirty-nine".