12939697 has 2 divisors, whose sum is σ = 12939698. Its totient is φ = 12939696.

The previous prime is 12939683. The next prime is 12939701. The reversal of 12939697 is 79693921.

12939697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10086976 + 2852721 = 3176^2 + 1689^2 .

It is a cyclic number.

It is not a de Polignac number, because 12939697 - 2¹¹ = 12937649 is a prime.

It is not a weakly prime, because it can be changed into another prime (12939637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469848 + 6469849.

It is an arithmetic number, because the mean of its divisors is an integer number (6469849).

Almost surely, 2^12939697 is an apocalyptic number.

It is an amenable number.

12939697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12939697 is an equidigital number, since it uses as much as digits as its factorization.

12939697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 12939697 is about 3597.1790336318. The cubic root of 12939697 is about 234.7693345505.

The spelling of 12939697 in words is "twelve million, nine hundred thirty-nine thousand, six hundred ninety-seven".