44388644 has 6 divisors (see below), whose sum is σ = 77680134. Its totient is φ = 22194320.

The previous prime is 44388637. The next prime is 44388653. The reversal of 44388644 is 44688344.

It can be written as a sum of positive squares in only one way, i.e., 44382244 + 6400 = 6662^2 + 80^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5548577 + ... + 5548584.

It is an arithmetic number, because the mean of its divisors is an integer number (12946689).

Almost surely, 2^44388644 is an apocalyptic number.

It is an amenable number.

44388644 is a deficient number, since it is larger than the sum of its proper divisors (33291490).

44388644 is a wasteful number, since it uses less digits than its factorization.

44388644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097165 (or 11097163 counting only the distinct ones).

The product of its digits is 294912, while the sum is 41.

The square root of 44388644 is about 6662.4803189203. The cubic root of 44388644 is about 354.0712189266.

The spelling of 44388644 in words is "forty-four million, three hundred eighty-eight thousand, six hundred forty-four".