12644299 has 2 divisors, whose sum is σ = 12644300. Its totient is φ = 12644298.

The previous prime is 12644293. The next prime is 12644341. The reversal of 12644299 is 99244621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12644299 - 2⁵ = 12644267 is a prime.

It is not a weakly prime, because it can be changed into another prime (12644293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6322149 + 6322150.

It is an arithmetic number, because the mean of its divisors is an integer number (6322150).

Almost surely, 2^12644299 is an apocalyptic number.

12644299 is a deficient number, since it is larger than the sum of its proper divisors (1).

12644299 is an equidigital number, since it uses as much as digits as its factorization.

12644299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 12644299 is about 3555.8823096385. The cubic root of 12644299 is about 232.9690626769.

The spelling of 12644299 in words is "twelve million, six hundred forty-four thousand, two hundred ninety-nine".