404149904 has 20 divisors (see below), whose sum is σ = 785959740. Its totient is φ = 201321600.

The previous prime is 404149901. The next prime is 404149919. The reversal of 404149904 is 409941404.

It can be written as a sum of positive squares in 2 ways, for example, as 123654400 + 280495504 = 11120^2 + 16748^2 .

It is not an unprimeable number, because it can be changed into a prime (404149901) 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, 42647 + ... + 51254.

It is an arithmetic number, because the mean of its divisors is an integer number (39297987).

Almost surely, 2^404149904 is an apocalyptic number.

It is an amenable number.

404149904 is a deficient number, since it is larger than the sum of its proper divisors (381809836).

404149904 is a wasteful number, since it uses less digits than its factorization.

404149904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94178 (or 94172 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 404149904 is about 20103.4798977689. The cubic root of 404149904 is about 739.3456011640.

The spelling of 404149904 in words is "four hundred four million, one hundred forty-nine thousand, nine hundred four".