859534 has 12 divisors (see below), whose sum is σ = 1396656. Its totient is φ = 396552.

The previous prime is 859513. The next prime is 859553. The reversal of 859534 is 435958.

It is a self number, because there is not a number n which added to its sum of digits gives 859534.

It is a congruent number.

It is an unprimeable number.

859534 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 5 ways as a sum of consecutive naturals, for example, 934 + ... + 1609.

It is an arithmetic number, because the mean of its divisors is an integer number (116388).

2⁸⁵⁹⁵³⁴ is an apocalyptic number.

859534 is a deficient number, since it is larger than the sum of its proper divisors (537122).

859534 is a wasteful number, since it uses less digits than its factorization.

859534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571 (or 2558 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 859534 is about 927.1105651431. The cubic root of 859534 is about 95.0796746187.

It can be divided in two parts, 8595 and 34, that multiplied together give a triangular number (292230 = T₇₆₄).

The spelling of 859534 in words is "eight hundred fifty-nine thousand, five hundred thirty-four".