404044004 has 36 divisors (see below), whose sum is σ = 885794364. Its totient is φ = 159840576.

The previous prime is 404044001. The next prime is 404044019. The reversal of 404044004 is 400440404.

It can be written as a sum of positive squares in 2 ways, for example, as 267387904 + 136656100 = 16352^2 + 11690^2 .

It is not an unprimeable number, because it can be changed into a prime (404044001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76739 + ... + 81834.

It is an arithmetic number, because the mean of its divisors is an integer number (24605399).

Almost surely, 2^404044004 is an apocalyptic number.

It is an amenable number.

404044004 is an abundant number, since it is smaller than the sum of its proper divisors (481750360).

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

404044004 is a wasteful number, since it uses less digits than its factorization.

404044004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158604 (or 158595 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 404044004 is about 20100.8458528491. The cubic root of 404044004 is about 739.2810182472.

Adding to 404044004 its reverse (400440404), we get a palindrome (804484408).

The spelling of 404044004 in words is "four hundred four million, forty-four thousand, four".