404036404 has 12 divisors (see below), whose sum is σ = 713551300. Its totient is φ = 200164608.

The previous prime is 404036401. The next prime is 404036417. The reversal of 404036404 is 404630404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 151290000 + 252746404 = 12300^2 + 15898^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404036401) 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, 462909 + ... + 463780.

Almost surely, 2^404036404 is an apocalyptic number.

It is an amenable number.

404036404 is a deficient number, since it is larger than the sum of its proper divisors (309514896).

404036404 is a wasteful number, since it uses less digits than its factorization.

404036404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926802 (or 926800 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 404036404 is about 20100.6568051892. The cubic root of 404036404 is about 739.2763829675.

Adding to 404036404 its reverse (404630404), we get a palindrome (808666808).

The spelling of 404036404 in words is "four hundred four million, thirty-six thousand, four hundred four".