12390430957 has 2 divisors, whose sum is σ = 12390430958. Its totient is φ = 12390430956.

The previous prime is 12390430939. The next prime is 12390430967. The reversal of 12390430957 is 75903409321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10205242441 + 2185188516 = 101021^2 + 46746^2 .

It is an emirp because it is prime and its reverse (75903409321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12390430957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12390430967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6195215478 + 6195215479.

It is an arithmetic number, because the mean of its divisors is an integer number (6195215479).

Almost surely, 2^12390430957 is an apocalyptic number.

It is an amenable number.

12390430957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12390430957 is an equidigital number, since it uses as much as digits as its factorization.

12390430957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 12390430957 in words is "twelve billion, three hundred ninety million, four hundred thirty thousand, nine hundred fifty-seven".