859043 has 4 divisors (see below), whose sum is σ = 863688. Its totient is φ = 854400.

The previous prime is 859037. The next prime is 859049. The reversal of 859043 is 340958.

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

It is an interprime number because it is at equal distance from previous prime (859037) and next prime (859049).

It is a cyclic number.

It is not a de Polignac number, because 859043 - 2⁸ = 858787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 858997 and 859015.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033 + ... + 2418.

It is an arithmetic number, because the mean of its divisors is an integer number (215922).

2⁸⁵⁹⁰⁴³ is an apocalyptic number.

859043 is a deficient number, since it is larger than the sum of its proper divisors (4645).

859043 is a wasteful number, since it uses less digits than its factorization.

859043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 859043 is about 926.8457261055. The cubic root of 859043 is about 95.0615667400.

It can be divided in two parts, 8590 and 43, that multiplied together give a triangular number (369370 = T₈₅₉).

The spelling of 859043 in words is "eight hundred fifty-nine thousand, forty-three".