859212 has 36 divisors (see below), whose sum is σ = 2249520. Its totient is φ = 276192.

The previous prime is 859189. The next prime is 859213. The reversal of 859212 is 212958.

It is a tau number, because it is divible by the number of its divisors (36).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 859212.

It is not an unprimeable number, because it can be changed into a prime (859213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 633 + ... + 1455.

2⁸⁵⁹²¹² 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 859212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1124760).

859212 is an abundant number, since it is smaller than the sum of its proper divisors (1390308).

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

859212 is a wasteful number, since it uses less digits than its factorization.

859212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 857 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 859212 is about 926.9368910557. The cubic root of 859212 is about 95.0678001692.

The spelling of 859212 in words is "eight hundred fifty-nine thousand, two hundred twelve".