12397499 has 2 divisors, whose sum is σ = 12397500. Its totient is φ = 12397498.

The previous prime is 12397487. The next prime is 12397513. The reversal of 12397499 is 99479321.

It is a weak prime.

It is an emirp because it is prime and its reverse (99479321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12397499 - 2⁸ = 12397243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12397409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6198749 + 6198750.

It is an arithmetic number, because the mean of its divisors is an integer number (6198750).

Almost surely, 2^12397499 is an apocalyptic number.

12397499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12397499 is an equidigital number, since it uses as much as digits as its factorization.

12397499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 44.

The square root of 12397499 is about 3521.0082362869. The cubic root of 12397499 is about 231.4433431503.

The spelling of 12397499 in words is "twelve million, three hundred ninety-seven thousand, four hundred ninety-nine".