40004044 has 24 divisors (see below), whose sum is σ = 74908400. Its totient is φ = 18636480.

The previous prime is 40004039. The next prime is 40004047. The reversal of 40004044 is 44040004.

It is not an unprimeable number, because it can be changed into a prime (40004047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322 + ... + 8950.

Almost surely, 2^40004044 is an apocalyptic number.

It is an amenable number.

40004044 is a deficient number, since it is larger than the sum of its proper divisors (34904356).

40004044 is a wasteful number, since it uses less digits than its factorization.

40004044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8713 (or 8711 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 40004044 is about 6324.8750185280. The cubic root of 40004044 is about 342.0067141848.

Adding to 40004044 its reverse (44040004), we get a palindrome (84044048).

The spelling of 40004044 in words is "forty million, four thousand, forty-four", and thus it is an eban number.