44209664 has 40 divisors (see below), whose sum is σ = 89532960. Its totient is φ = 21805056.

The previous prime is 44209661. The next prime is 44209681. The reversal of 44209664 is 46690244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44209661) 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, 39902 + ... + 40994.

It is an arithmetic number, because the mean of its divisors is an integer number (2238324).

Almost surely, 2^44209664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44209664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44766480).

44209664 is an abundant number, since it is smaller than the sum of its proper divisors (45323296).

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

44209664 is an equidigital number, since it uses as much as digits as its factorization.

44209664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 44209664 is about 6649.0348171746. The cubic root of 44209664 is about 353.5946929037.

The spelling of 44209664 in words is "forty-four million, two hundred nine thousand, six hundred sixty-four".