44994640 has 40 divisors (see below), whose sum is σ = 107993088. Its totient is φ = 17416320.

The previous prime is 44994629. The next prime is 44994659. The reversal of 44994640 is 4649944.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 44994593 and 44994602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6592 + ... + 11551.

Almost surely, 2^44994640 is an apocalyptic number.

44994640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44994640 is an abundant number, since it is smaller than the sum of its proper divisors (62998448).

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

44994640 is a wasteful number, since it uses less digits than its factorization.

44994640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18187 (or 18181 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 44994640 is about 6707.8044097901. The cubic root of 44994640 is about 355.6752077045.

The spelling of 44994640 in words is "forty-four million, nine hundred ninety-four thousand, six hundred forty".