859808 has 24 divisors (see below), whose sum is σ = 1716372. Its totient is φ = 423936.

The previous prime is 859801. The next prime is 859823. The reversal of 859808 is 808958.

It can be written as a sum of positive squares in 2 ways, for example, as 824464 + 35344 = 908^2 + 188^2 .

It is not an unprimeable number, because it can be changed into a prime (859801) by changing a digit.

859808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2966 + ... + 3242.

2⁸⁵⁹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

859808 is a deficient number, since it is larger than the sum of its proper divisors (856564).

859808 is a wasteful number, since it uses less digits than its factorization.

859808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 38.

The square root of 859808 is about 927.2583243088. The cubic root of 859808 is about 95.0897766287.

The spelling of 859808 in words is "eight hundred fifty-nine thousand, eight hundred eight".