12939013 has 2 divisors, whose sum is σ = 12939014. Its totient is φ = 12939012.

The previous prime is 12939007. The next prime is 12939029. The reversal of 12939013 is 31093921.

12939013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12837889 + 101124 = 3583^2 + 318^2 .

It is an emirp because it is prime and its reverse (31093921) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12939013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12939083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469506 + 6469507.

It is an arithmetic number, because the mean of its divisors is an integer number (6469507).

Almost surely, 2^12939013 is an apocalyptic number.

It is an amenable number.

12939013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12939013 is an equidigital number, since it uses as much as digits as its factorization.

12939013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 12939013 is about 3597.0839578748. The cubic root of 12939013 is about 234.7651977959.

The spelling of 12939013 in words is "twelve million, nine hundred thirty-nine thousand, thirteen".