859356 has 48 divisors (see below), whose sum is σ = 2279200. Its totient is φ = 279936.

The previous prime is 859321. The next prime is 859361. The reversal of 859356 is 653958.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 859356.

It is a congruent number.

It is an unprimeable number.

859356 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7830 + ... + 7938.

2⁸⁵⁹³⁵⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 859356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1139600).

859356 is an abundant number, since it is smaller than the sum of its proper divisors (1419844).

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

859356 is a wasteful number, since it uses less digits than its factorization.

859356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 187 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 859356 is about 927.0145629924. The cubic root of 859356 is about 95.0731108487.

859356 divided by its sum of digits (36) gives a triangular number (23871 = T₂₁₈).

It can be divided in two parts, 8593 and 56, that added together give a square (8649 = 93²).

The spelling of 859356 in words is "eight hundred fifty-nine thousand, three hundred fifty-six".