12990949 has 2 divisors, whose sum is σ = 12990950. Its totient is φ = 12990948.

The previous prime is 12990899. The next prime is 12990979. The reversal of 12990949 is 94909921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7317025 + 5673924 = 2705^2 + 2382^2 .

It is a cyclic number.

It is not a de Polignac number, because 12990949 - 2⁹ = 12990437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12990979) 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, 6495474 + 6495475.

It is an arithmetic number, because the mean of its divisors is an integer number (6495475).

Almost surely, 2^12990949 is an apocalyptic number.

It is an amenable number.

12990949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12990949 is an equidigital number, since it uses as much as digits as its factorization.

12990949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 12990949 is about 3604.2959090508. The cubic root of 12990949 is about 235.0788870510.

The spelling of 12990949 in words is "twelve million, nine hundred ninety thousand, nine hundred forty-nine".