404478 has 24 divisors (see below), whose sum is σ = 915408. Its totient is φ = 128832.

The previous prime is 404461. The next prime is 404483. The reversal of 404478 is 874404.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (38142).

2⁴⁰⁴⁴⁷⁸ is an apocalyptic number.

404478 is an abundant number, since it is smaller than the sum of its proper divisors (510930).

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

404478 is a wasteful number, since it uses less digits than its factorization.

404478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 404478 is about 635.9858488992. The cubic root of 404478 is about 73.9545618302.

The spelling of 404478 in words is "four hundred four thousand, four hundred seventy-eight".