859400 has 24 divisors (see below), whose sum is σ = 1998570. Its totient is φ = 343680.

The previous prime is 859393. The next prime is 859423. The reversal of 859400 is 4958.

It can be written as a sum of positive squares in 3 ways, for example, as 649636 + 209764 = 806^2 + 458^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 859400.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 859400.

It is an unprimeable number.

859400 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 5 ways as a sum of consecutive naturals, for example, 1949 + ... + 2348.

2⁸⁵⁹⁴⁰⁰ is an apocalyptic number.

It is an amenable number.

859400 is an abundant number, since it is smaller than the sum of its proper divisors (1139170).

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

859400 is a wasteful number, since it uses less digits than its factorization.

859400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313 (or 4304 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 859400 is about 927.0382947861. The cubic root of 859400 is about 95.0747334380.

The spelling of 859400 in words is "eight hundred fifty-nine thousand, four hundred".