12499897 has 2 divisors, whose sum is σ = 12499898. Its totient is φ = 12499896.

The previous prime is 12499873. The next prime is 12499901. The reversal of 12499897 is 79899421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12362256 + 137641 = 3516^2 + 371^2 .

It is a cyclic number.

It is not a de Polignac number, because 12499897 - 2¹⁹ = 11975609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12499897.

It is not a weakly prime, because it can be changed into another prime (12499867) 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, 6249948 + 6249949.

It is an arithmetic number, because the mean of its divisors is an integer number (6249949).

Almost surely, 2^12499897 is an apocalyptic number.

It is an amenable number.

12499897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12499897 is an equidigital number, since it uses as much as digits as its factorization.

12499897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 49.

The square root of 12499897 is about 3535.5193395030. The cubic root of 12499897 is about 232.0788042340.

The spelling of 12499897 in words is "twelve million, four hundred ninety-nine thousand, eight hundred ninety-seven".