1004440044 has 24 divisors (see below), whose sum is σ = 2367857968. Its totient is φ = 331361280.

The previous prime is 1004440043. The next prime is 1004440057. The reversal of 1004440044 is 4400444001.

It is a self number, because there is not a number n which added to its sum of digits gives 1004440044.

It is not an unprimeable number, because it can be changed into a prime (1004440043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430297 + ... + 432624.

Almost surely, 2^1004440044 is an apocalyptic number.

It is an amenable number.

1004440044 is an abundant number, since it is smaller than the sum of its proper divisors (1363417924).

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

1004440044 is a wasteful number, since it uses less digits than its factorization.

1004440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863025 (or 863023 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1004440044 is about 31692.9021075698. The cubic root of 1004440044 is about 1001.4778296105.

Adding to 1004440044 its reverse (4400444001), we get a palindrome (5404884045).

The spelling of 1004440044 in words is "one billion, four million, four hundred forty thousand, forty-four".