12256399 has 2 divisors, whose sum is σ = 12256400. Its totient is φ = 12256398.

The previous prime is 12256397. The next prime is 12256403. The reversal of 12256399 is 99365221.

12256399 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12256399 - 2¹ = 12256397 is a prime.

Together with 12256397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12256397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128199 + 6128200.

It is an arithmetic number, because the mean of its divisors is an integer number (6128200).

Almost surely, 2^12256399 is an apocalyptic number.

12256399 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256399 is an equidigital number, since it uses as much as digits as its factorization.

12256399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 12256399 is about 3500.9140235087. The cubic root of 12256399 is about 230.5619466387.

The spelling of 12256399 in words is "twelve million, two hundred fifty-six thousand, three hundred ninety-nine".