12939723 has 16 divisors (see below), whose sum is σ = 19639200. Its totient is φ = 8415360.

The previous prime is 12939709. The next prime is 12939727. The reversal of 12939723 is 32793921.

It is not a de Polignac number, because 12939723 - 2⁶ = 12939659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12939727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4738 + ... + 6951.

It is an arithmetic number, because the mean of its divisors is an integer number (1227450).

Almost surely, 2^12939723 is an apocalyptic number.

12939723 is a deficient number, since it is larger than the sum of its proper divisors (6699477).

12939723 is a wasteful number, since it uses less digits than its factorization.

12939723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11739 (or 11733 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 12939723 is about 3597.1826475730. The cubic root of 12939723 is about 234.7694917927.

The spelling of 12939723 in words is "twelve million, nine hundred thirty-nine thousand, seven hundred twenty-three".