12893971 has 2 divisors, whose sum is σ = 12893972. Its totient is φ = 12893970.

The previous prime is 12893953. The next prime is 12893983. The reversal of 12893971 is 17939821.

12893971 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (17939821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12893971 - 2⁹ = 12893459 is a prime.

It is not a weakly prime, because it can be changed into another prime (12893911) 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 as a sum of consecutive naturals, namely, 6446985 + 6446986.

It is an arithmetic number, because the mean of its divisors is an integer number (6446986).

Almost surely, 2^12893971 is an apocalyptic number.

12893971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12893971 is an equidigital number, since it uses as much as digits as its factorization.

12893971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 40.

The square root of 12893971 is about 3590.8175949218. The cubic root of 12893971 is about 234.4924673621.

The spelling of 12893971 in words is "twelve million, eight hundred ninety-three thousand, nine hundred seventy-one".