12539394 has 64 divisors (see below), whose sum is σ = 32544000. Its totient is φ = 3577392.

The previous prime is 12539389. The next prime is 12539467. The reversal of 12539394 is 49393521.

It is a happy number.

12539394 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18184 + ... + 18860.

It is an arithmetic number, because the mean of its divisors is an integer number (508500).

Almost surely, 2^12539394 is an apocalyptic number.

12539394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12539394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16272000).

12539394 is an abundant number, since it is smaller than the sum of its proper divisors (20004606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12539394 is an equidigital number, since it uses as much as digits as its factorization.

12539394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 689 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 12539394 is about 3541.1006763434. The cubic root of 12539394 is about 232.3229870142.

The spelling of 12539394 in words is "twelve million, five hundred thirty-nine thousand, three hundred ninety-four".