859900112 has 40 divisors (see below), whose sum is σ = 1727065800. Its totient is φ = 414267392.

The previous prime is 859900079. The next prime is 859900117. The reversal of 859900112 is 211009958.

It can be written as a sum of positive squares in 4 ways, for example, as 142945936 + 716954176 = 11956^2 + 26776^2 .

It is a super-2 number, since 2×859900112² = 1478856405235225088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859900117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262388 + ... + 265644.

It is an arithmetic number, because the mean of its divisors is an integer number (43176645).

Almost surely, 2^859900112 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 859900112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863532900).

859900112 is an abundant number, since it is smaller than the sum of its proper divisors (867165688).

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

859900112 is a wasteful number, since it uses less digits than its factorization.

859900112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863 (or 3857 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 859900112 is about 29324.0534715104. The cubic root of 859900112 is about 950.9317219168.

The spelling of 859900112 in words is "eight hundred fifty-nine million, nine hundred thousand, one hundred twelve".