12644444 has 12 divisors (see below), whose sum is σ = 22224384. Its totient is φ = 6294624.

The previous prime is 12644393. The next prime is 12644459. The reversal of 12644444 is 44444621.

12644444 is a modest number, since divided by 4444 gives 1264 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5852 + ... + 7715.

It is an arithmetic number, because the mean of its divisors is an integer number (1852032).

Almost surely, 2^12644444 is an apocalyptic number.

It is an amenable number.

12644444 is a deficient number, since it is larger than the sum of its proper divisors (9579940).

12644444 is a wasteful number, since it uses less digits than its factorization.

12644444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13804 (or 13802 counting only the distinct ones).

The product of its digits is 12288, while the sum is 29.

The square root of 12644444 is about 3555.9026983313. The cubic root of 12644444 is about 232.9699532070.

The spelling of 12644444 in words is "twelve million, six hundred forty-four thousand, four hundred forty-four".