1004220444 has 12 divisors (see below), whose sum is σ = 2343181064. Its totient is φ = 334740144.

The previous prime is 1004220443. The next prime is 1004220461. The reversal of 1004220444 is 4440224001.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1004220444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004220443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41842507 + ... + 41842530.

Almost surely, 2^1004220444 is an apocalyptic number.

It is an amenable number.

1004220444 is an abundant number, since it is smaller than the sum of its proper divisors (1338960620).

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

1004220444 is a wasteful number, since it uses less digits than its factorization.

1004220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83685044 (or 83685042 counting only the distinct ones).

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

The square root of 1004220444 is about 31689.4374200616. The cubic root of 1004220444 is about 1001.4048401666.

Adding to 1004220444 its reverse (4440224001), we get a palindrome (5444444445).

The spelling of 1004220444 in words is "one billion, four million, two hundred twenty thousand, four hundred forty-four".