4445644 has 24 divisors (see below), whose sum is σ = 8951040. Its totient is φ = 1892496.

The previous prime is 4445633. The next prime is 4445657. The reversal of 4445644 is 4465444.

4445644 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4569 + ... + 5455.

It is an arithmetic number, because the mean of its divisors is an integer number (372960).

Almost surely, 2^4445644 is an apocalyptic number.

It is an amenable number.

4445644 is an abundant number, since it is smaller than the sum of its proper divisors (4505396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4445644 is a wasteful number, since it uses less digits than its factorization.

4445644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077 (or 1075 counting only the distinct ones).

The product of its digits is 30720, while the sum is 31.

The square root of 4445644 is about 2108.4695871651. The cubic root of 4445644 is about 164.4289287501.

The spelling of 4445644 in words is "four million, four hundred forty-five thousand, six hundred forty-four".