404885 has 8 divisors (see below), whose sum is σ = 523320. Its totient is φ = 298944.

The previous prime is 404851. The next prime is 404941. The reversal of 404885 is 588404.

It can be written as a sum of positive squares in 4 ways, for example, as 6724 + 398161 = 82^2 + 631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404885 - 2¹⁰ = 403861 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3050 + ... + 3179.

It is an arithmetic number, because the mean of its divisors is an integer number (65415).

2⁴⁰⁴⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

404885 is a deficient number, since it is larger than the sum of its proper divisors (118435).

404885 is a wasteful number, since it uses less digits than its factorization.

404885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6247.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 404885 is about 636.3057441199. The cubic root of 404885 is about 73.9793587426.

The spelling of 404885 in words is "four hundred four thousand, eight hundred eighty-five".