859404 has 48 divisors (see below), whose sum is σ = 2471168. Its totient is φ = 226368.

The previous prime is 859393. The next prime is 859423. The reversal of 859404 is 404958.

It is an Ulam number.

It is an unprimeable number.

859404 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699 + ... + 1485.

2⁸⁵⁹⁴⁰⁴ is an apocalyptic number.

859404 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 859404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235584).

859404 is an abundant number, since it is smaller than the sum of its proper divisors (1611764).

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

859404 is a wasteful number, since it uses less digits than its factorization.

859404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814 (or 812 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 859404 is about 927.0404521918. The cubic root of 859404 is about 95.0748809433.

The spelling of 859404 in words is "eight hundred fifty-nine thousand, four hundred four".