44644664 has 32 divisors (see below), whose sum is σ = 86177520. Its totient is φ = 21670656.

The previous prime is 44644657. The next prime is 44644667. The reversal of 44644664 is 46644644.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44644667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79874 + ... + 80430.

Almost surely, 2^44644664 is an apocalyptic number.

It is an amenable number.

44644664 is a deficient number, since it is larger than the sum of its proper divisors (41532856).

44644664 is a wasteful number, since it uses less digits than its factorization.

44644664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 835 counting only the distinct ones).

The product of its digits is 221184, while the sum is 38.

The square root of 44644664 is about 6681.6662592500. Note that the first 3 decimals coincide. The cubic root of 44644664 is about 354.7506388753.

The spelling of 44644664 in words is "forty-four million, six hundred forty-four thousand, six hundred sixty-four".