12939571 has 2 divisors, whose sum is σ = 12939572. Its totient is φ = 12939570.

The previous prime is 12939541. The next prime is 12939583. The reversal of 12939571 is 17593921.

12939571 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 is a cyclic number.

It is not a de Polignac number, because 12939571 - 2¹³ = 12931379 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12939571.

It is not a weakly prime, because it can be changed into another prime (12939541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6469785 + 6469786.

It is an arithmetic number, because the mean of its divisors is an integer number (6469786).

Almost surely, 2^12939571 is an apocalyptic number.

12939571 is a deficient number, since it is larger than the sum of its proper divisors (1).

12939571 is an equidigital number, since it uses as much as digits as its factorization.

12939571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 37.

The square root of 12939571 is about 3597.1615198654. The cubic root of 12939571 is about 234.7685725277.

The spelling of 12939571 in words is "twelve million, nine hundred thirty-nine thousand, five hundred seventy-one".