12997499 has 2 divisors, whose sum is σ = 12997500. Its totient is φ = 12997498.

The previous prime is 12997493. The next prime is 12997513. The reversal of 12997499 is 99479921.

12997499 is digitally balanced in base 3, because in such base 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 12997499 - 2⁴ = 12997483 is a prime.

It is not a weakly prime, because it can be changed into another prime (12997493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6498749 + 6498750.

It is an arithmetic number, because the mean of its divisors is an integer number (6498750).

Almost surely, 2^12997499 is an apocalyptic number.

12997499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12997499 is an equidigital number, since it uses as much as digits as its factorization.

12997499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 50.

The square root of 12997499 is about 3605.2044324837. The cubic root of 12997499 is about 235.1183891177.

The spelling of 12997499 in words is "twelve million, nine hundred ninety-seven thousand, four hundred ninety-nine".