859040 has 96 divisors (see below), whose sum is σ = 2540160. Its totient is φ = 267264.

The previous prime is 859037. The next prime is 859049. The reversal of 859040 is 40958.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14531 + ... + 14589.

It is an arithmetic number, because the mean of its divisors is an integer number (26460).

2⁸⁵⁹⁰⁴⁰ is an apocalyptic number.

859040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 859040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270080).

859040 is an abundant number, since it is smaller than the sum of its proper divisors (1681120).

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

859040 is a wasteful number, since it uses less digits than its factorization.

859040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 859040 is about 926.8441077118. The cubic root of 859040 is about 95.0614560800.

Adding to 859040 its reverse (40958), we get a palindrome (899998).

The spelling of 859040 in words is "eight hundred fifty-nine thousand, forty".