12568399 has 2 divisors, whose sum is σ = 12568400. Its totient is φ = 12568398.

The previous prime is 12568393. The next prime is 12568417. The reversal of 12568399 is 99386521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12568399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12568393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284199 + 6284200.

It is an arithmetic number, because the mean of its divisors is an integer number (6284200).

Almost surely, 2^12568399 is an apocalyptic number.

12568399 is a deficient number, since it is larger than the sum of its proper divisors (1).

12568399 is an equidigital number, since it uses as much as digits as its factorization.

12568399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 12568399 is about 3545.1937887794. The cubic root of 12568399 is about 232.5019786319.

The spelling of 12568399 in words is "twelve million, five hundred sixty-eight thousand, three hundred ninety-nine".