44389664 has 24 divisors (see below), whose sum is σ = 95337648. Its totient is φ = 20176960.

The previous prime is 44389663. The next prime is 44389679. The reversal of 44389664 is 46698344.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (44389661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62702 + ... + 63405.

It is an arithmetic number, because the mean of its divisors is an integer number (3972402).

Almost surely, 2^44389664 is an apocalyptic number.

44389664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

44389664 is an abundant number, since it is smaller than the sum of its proper divisors (50947984).

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

44389664 is a wasteful number, since it uses less digits than its factorization.

44389664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126128 (or 126120 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 44389664 is about 6662.5568665491. The cubic root of 44389664 is about 354.0739309557.

The spelling of 44389664 in words is "forty-four million, three hundred eighty-nine thousand, six hundred sixty-four".