404043404 has 24 divisors (see below), whose sum is σ = 730246608. Its totient is φ = 195462720.

The previous prime is 404043401. The next prime is 404043407. The reversal of 404043404 is 404340404.

It is an interprime number because it is at equal distance from previous prime (404043401) and next prime (404043407).

It is a self number, because there is not a number n which added to its sum of digits gives 404043404.

It is not an unprimeable number, because it can be changed into a prime (404043401) 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, 19247 + ... + 34329.

It is an arithmetic number, because the mean of its divisors is an integer number (30426942).

Almost surely, 2^404043404 is an apocalyptic number.

It is an amenable number.

404043404 is a deficient number, since it is larger than the sum of its proper divisors (326203204).

404043404 is a wasteful number, since it uses less digits than its factorization.

404043404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15305 (or 15303 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 404043404 is about 20100.8309280985. The cubic root of 404043404 is about 739.2806523062.

Adding to 404043404 its reverse (404340404), we get a palindrome (808383808).

The spelling of 404043404 in words is "four hundred four million, forty-three thousand, four hundred four".