858404 has 12 divisors (see below), whose sum is σ = 1525104. Its totient is φ = 422664.

The previous prime is 858397. The next prime is 858427. The reversal of 858404 is 404858.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 858404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1334 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (127092).

2⁸⁵⁸⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

858404 is a deficient number, since it is larger than the sum of its proper divisors (666700).

858404 is a wasteful number, since it uses less digits than its factorization.

858404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3274 (or 3272 counting only the distinct ones).

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

The square root of 858404 is about 926.5009444140. The cubic root of 858404 is about 95.0379903459.

The spelling of 858404 in words is "eight hundred fifty-eight thousand, four hundred four".