859950 has 144 divisors (see below), whose sum is σ = 2968560. Its totient is φ = 181440.

The previous prime is 859939. The next prime is 859973. The reversal of 859950 is 59958.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

859950 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 71 ways as a sum of consecutive naturals, for example, 66144 + ... + 66156.

It is an arithmetic number, because the mean of its divisors is an integer number (20615).

2⁸⁵⁹⁹⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 859950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1484280).

859950 is an abundant number, since it is smaller than the sum of its proper divisors (2108610).

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

859950 is a wasteful number, since it uses less digits than its factorization.

859950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 859950 is about 927.3348909644. The cubic root of 859950 is about 95.0950111326.

It can be divided in two parts, 8599 and 50, that added together give a square (8649 = 93²).

The spelling of 859950 in words is "eight hundred fifty-nine thousand, nine hundred fifty".