40624444 has 12 divisors (see below), whose sum is σ = 81248944. Its totient is φ = 17410464.

The previous prime is 40624439. The next prime is 40624459. The reversal of 40624444 is 44442604.

40624444 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 1450873 = 40624444 / (4 + 0 + 6 + 2 + 4 + 4 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725409 + ... + 725464.

Almost surely, 2^40624444 is an apocalyptic number.

It is an amenable number.

40624444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40624444 is a wasteful number, since it uses less digits than its factorization.

40624444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450884 (or 1450882 counting only the distinct ones).

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

The square root of 40624444 is about 6373.7307756133. The cubic root of 40624444 is about 343.7656484777.

The spelling of 40624444 in words is "forty million, six hundred twenty-four thousand, four hundred forty-four".