859940 has 48 divisors (see below), whose sum is σ = 1989120. Its totient is φ = 311040.

The previous prime is 859939. The next prime is 859973. The reversal of 859940 is 49958.

859940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 859940.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11744 + ... + 11816.

It is an arithmetic number, because the mean of its divisors is an integer number (41440).

2⁸⁵⁹⁹⁴⁰ 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 859940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994560).

859940 is an abundant number, since it is smaller than the sum of its proper divisors (1129180).

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

859940 is a wasteful number, since it uses less digits than its factorization.

859940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 859940 is about 927.3294991533. The cubic root of 859940 is about 95.0946425244.

The spelling of 859940 in words is "eight hundred fifty-nine thousand, nine hundred forty".