859198 has 4 divisors (see below), whose sum is σ = 1288800. Its totient is φ = 429598.

The previous prime is 859189. The next prime is 859213. The reversal of 859198 is 891958.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 859198.

It is a congruent number.

It is an unprimeable 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 as a sum of consecutive naturals, namely, 214798 + ... + 214801.

It is an arithmetic number, because the mean of its divisors is an integer number (322200).

2⁸⁵⁹¹⁹⁸ is an apocalyptic number.

859198 is a deficient number, since it is larger than the sum of its proper divisors (429602).

859198 is a wasteful number, since it uses less digits than its factorization.

859198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429601.

The product of its digits is 25920, while the sum is 40.

The square root of 859198 is about 926.9293392703. The cubic root of 859198 is about 95.0672838215.

The spelling of 859198 in words is "eight hundred fifty-nine thousand, one hundred ninety-eight".