859243 has 8 divisors (see below), whose sum is σ = 1071360. Its totient is φ = 669480.

The previous prime is 859223. The next prime is 859249. The reversal of 859243 is 342958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 859243 - 2¹³ = 851051 is a prime.

It is a d-powerful number, because it can be written as 8⁶ + 5² + 2¹⁶ + 9² + 4² + 3¹² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859249) 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 7 ways as a sum of consecutive naturals, for example, 5503 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (133920).

2⁸⁵⁹²⁴³ is an apocalyptic number.

859243 is a deficient number, since it is larger than the sum of its proper divisors (212117).

859243 is a wasteful number, since it uses less digits than its factorization.

859243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11177.

The product of its digits is 8640, while the sum is 31.

The square root of 859243 is about 926.9536126474. The cubic root of 859243 is about 95.0689434906.

The spelling of 859243 in words is "eight hundred fifty-nine thousand, two hundred forty-three".