404776 has 16 divisors (see below), whose sum is σ = 799200. Its totient is φ = 191664.

The previous prime is 404773. The next prime is 404779. The reversal of 404776 is 677404.

It is an interprime number because it is at equal distance from previous prime (404773) and next prime (404779).

It is a super-2 number, since 2×404776² = 327687220352, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1180 + ... + 1483.

It is an arithmetic number, because the mean of its divisors is an integer number (49950).

2⁴⁰⁴⁷⁷⁶ is an apocalyptic number.

It is an amenable number.

404776 is a deficient number, since it is larger than the sum of its proper divisors (394424).

404776 is a wasteful number, since it uses less digits than its factorization.

404776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688 (or 2684 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 404776 is about 636.2200877055. The cubic root of 404776 is about 73.9727194303.

The spelling of 404776 in words is "four hundred four thousand, seven hundred seventy-six".