12939572 has 6 divisors (see below), whose sum is σ = 22644258. Its totient is φ = 6469784.

The previous prime is 12939571. The next prime is 12939583. The reversal of 12939572 is 27593921.

It can be written as a sum of positive squares in only one way, i.e., 11316496 + 1623076 = 3364^2 + 1274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12939571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1617443 + ... + 1617450.

It is an arithmetic number, because the mean of its divisors is an integer number (3774043).

Almost surely, 2^12939572 is an apocalyptic number.

It is an amenable number.

12939572 is a deficient number, since it is larger than the sum of its proper divisors (9704686).

12939572 is a wasteful number, since it uses less digits than its factorization.

12939572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234897 (or 3234895 counting only the distinct ones).

The product of its digits is 34020, while the sum is 38.

The square root of 12939572 is about 3597.1616588638. The cubic root of 12939572 is about 234.7685785755.

The spelling of 12939572 in words is "twelve million, nine hundred thirty-nine thousand, five hundred seventy-two".