12544999 has 2 divisors, whose sum is σ = 12545000. Its totient is φ = 12544998.

The previous prime is 12544981. The next prime is 12545041. The reversal of 12544999 is 99944521.

It is a weak prime.

It is an emirp because it is prime and its reverse (99944521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12544999 - 2⁵ = 12544967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12544979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272499 + 6272500.

It is an arithmetic number, because the mean of its divisors is an integer number (6272500).

Almost surely, 2^12544999 is an apocalyptic number.

12544999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12544999 is an equidigital number, since it uses as much as digits as its factorization.

12544999 is an evil number, because the sum of its binary digits is even.

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

The square root of 12544999 is about 3541.8920085175. The cubic root of 12544999 is about 232.3575973091.

The spelling of 12544999 in words is "twelve million, five hundred forty-four thousand, nine hundred ninety-nine".