44609640 has 64 divisors (see below), whose sum is σ = 137108160. Its totient is φ = 11604480.

The previous prime is 44609603. The next prime is 44609659. The reversal of 44609640 is 4690644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387 + ... + 9453.

It is an arithmetic number, because the mean of its divisors is an integer number (2142315).

Almost surely, 2^44609640 is an apocalyptic number.

44609640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44609640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68554080).

44609640 is an abundant number, since it is smaller than the sum of its proper divisors (92498520).

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

44609640 is a wasteful number, since it uses less digits than its factorization.

44609640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9122 (or 9118 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 44609640 is about 6679.0448418917. The cubic root of 44609640 is about 354.6578466221.

The spelling of 44609640 in words is "forty-four million, six hundred nine thousand, six hundred forty".