208859 has 4 divisors (see below), whose sum is σ = 238704. Its totient is φ = 179016.

The previous prime is 208843. The next prime is 208877. The reversal of 208859 is 958802.

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 208859 - 2⁴ = 208843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208889) 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, 14912 + ... + 14925.

It is an arithmetic number, because the mean of its divisors is an integer number (59676).

2²⁰⁸⁸⁵⁹ is an apocalyptic number.

208859 is a deficient number, since it is larger than the sum of its proper divisors (29845).

208859 is an equidigital number, since it uses as much as digits as its factorization.

208859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29844.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 208859 is about 457.0109407881. The cubic root of 208859 is about 59.3313729381.

The spelling of 208859 in words is "two hundred eight thousand, eight hundred fifty-nine".