12944689 has 2 divisors, whose sum is σ = 12944690. Its totient is φ = 12944688.

The previous prime is 12944669. The next prime is 12944713. The reversal of 12944689 is 98644921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11424400 + 1520289 = 3380^2 + 1233^2 .

It is a cyclic number.

It is not a de Polignac number, because 12944689 - 2⁹ = 12944177 is a prime.

It is not a weakly prime, because it can be changed into another prime (12944609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6472344 + 6472345.

It is an arithmetic number, because the mean of its divisors is an integer number (6472345).

Almost surely, 2^12944689 is an apocalyptic number.

It is an amenable number.

12944689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12944689 is an equidigital number, since it uses as much as digits as its factorization.

12944689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 43.

The square root of 12944689 is about 3597.8728437787. The cubic root of 12944689 is about 234.7995211883.

The spelling of 12944689 in words is "twelve million, nine hundred forty-four thousand, six hundred eighty-nine".