404778 has 16 divisors (see below), whose sum is σ = 883296. Its totient is φ = 122640.

The previous prime is 404773. The next prime is 404779. The reversal of 404778 is 877404.

It is not an unprimeable number, because it can be changed into a prime (404773) 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, 3001 + ... + 3132.

It is an arithmetic number, because the mean of its divisors is an integer number (55206).

2⁴⁰⁴⁷⁷⁸ is an apocalyptic number.

404778 is an abundant number, since it is smaller than the sum of its proper divisors (478518).

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

404778 is a wasteful number, since it uses less digits than its factorization.

404778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6149.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 404778 is about 636.2216594867. The cubic root of 404778 is about 73.9728412633.

The spelling of 404778 in words is "four hundred four thousand, seven hundred seventy-eight".