859039 has 4 divisors (see below), whose sum is σ = 864880. Its totient is φ = 853200.

The previous prime is 859037. The next prime is 859049. The reversal of 859039 is 930958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 859039 - 2¹ = 859037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 858995 and 859013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (859031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694 + ... + 2995.

It is an arithmetic number, because the mean of its divisors is an integer number (216220).

2⁸⁵⁹⁰³⁹ is an apocalyptic number.

859039 is a deficient number, since it is larger than the sum of its proper divisors (5841).

859039 is a wasteful number, since it uses less digits than its factorization.

859039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5840.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 859039 is about 926.8435682466. The cubic root of 859039 is about 95.0614191933.

The spelling of 859039 in words is "eight hundred fifty-nine thousand, thirty-nine".