44636644 has 12 divisors (see below), whose sum is σ = 84123004. Its totient is φ = 20601504.

The previous prime is 44636609. The next prime is 44636663. The reversal of 44636644 is 44663644.

It can be written as a sum of positive squares in 2 ways, for example, as 18748900 + 25887744 = 4330^2 + 5088^2 .

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, 429147 + ... + 429250.

Almost surely, 2^44636644 is an apocalyptic number.

It is an amenable number.

44636644 is a deficient number, since it is larger than the sum of its proper divisors (39486360).

44636644 is a wasteful number, since it uses less digits than its factorization.

44636644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858414 (or 858412 counting only the distinct ones).

The product of its digits is 165888, while the sum is 37.

The square root of 44636644 is about 6681.0660825949. The cubic root of 44636644 is about 354.7293950486.

Subtracting 44636644 from its reverse (44663644), we obtain a cube (27000 = 30³).

The spelling of 44636644 in words is "forty-four million, six hundred thirty-six thousand, six hundred forty-four".