404684 has 24 divisors (see below), whose sum is σ = 823200. Its totient is φ = 170496.

The previous prime is 404671. The next prime is 404693. The reversal of 404684 is 486404.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2642 + ... + 2790.

It is an arithmetic number, because the mean of its divisors is an integer number (34300).

2⁴⁰⁴⁶⁸⁴ is an apocalyptic number.

It is an amenable number.

404684 is an abundant number, since it is smaller than the sum of its proper divisors (418516).

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

404684 is a wasteful number, since it uses less digits than its factorization.

404684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 404684 is about 636.1477815728. The cubic root of 404684 is about 73.9671146795.

The spelling of 404684 in words is "four hundred four thousand, six hundred eighty-four".