404956 has 12 divisors (see below), whose sum is σ = 733320. Its totient is φ = 195440.

The previous prime is 404951. The next prime is 404959. The reversal of 404956 is 659404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404951) by changing a digit.

404956 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (61110).

2⁴⁰⁴⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

404956 is a deficient number, since it is larger than the sum of its proper divisors (328364).

404956 is a wasteful number, since it uses less digits than its factorization.

404956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524 (or 3522 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 404956 is about 636.3615324641. The cubic root of 404956 is about 73.9836827914.

The spelling of 404956 in words is "four hundred four thousand, nine hundred fifty-six".