44640442 has 32 divisors (see below), whose sum is σ = 84447360. Its totient is φ = 17191680.

The previous prime is 44640413. The next prime is 44640457. The reversal of 44640442 is 24404644.

It is a self number, because there is not a number n which added to its sum of digits gives 44640442.

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, 12078 + ... + 15334.

It is an arithmetic number, because the mean of its divisors is an integer number (2638980).

Almost surely, 2^44640442 is an apocalyptic number.

44640442 is a deficient number, since it is larger than the sum of its proper divisors (39806918).

44640442 is a wasteful number, since it uses less digits than its factorization.

44640442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 44640442 is about 6681.3503126239. The cubic root of 44640442 is about 354.7394557216.

The spelling of 44640442 in words is "forty-four million, six hundred forty thousand, four hundred forty-two".