404922 has 32 divisors (see below), whose sum is σ = 958464. Its totient is φ = 111600.

The previous prime is 404851. The next prime is 404941. The reversal of 404922 is 229404.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

404922 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 15 ways as a sum of consecutive naturals, for example, 1147 + ... + 1457.

It is an arithmetic number, because the mean of its divisors is an integer number (29952).

2⁴⁰⁴⁹²² is an apocalyptic number.

404922 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 404922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479232).

404922 is an abundant number, since it is smaller than the sum of its proper divisors (553542).

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

404922 is a wasteful number, since it uses less digits than its factorization.

404922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 404922 is about 636.3348175293. The cubic root of 404922 is about 73.9816121832.

It can be divided in two parts, 404 and 922, that added together give a triangular number (1326 = T₅₁).

The spelling of 404922 in words is "four hundred four thousand, nine hundred twenty-two".