8205859 has 2 divisors, whose sum is σ = 8205860. Its totient is φ = 8205858.

The previous prime is 8205839. The next prime is 8205881. The reversal of 8205859 is 9585028.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8205859 - 2¹⁵ = 8173091 is a prime.

It is a super-2 number, since 2×8205859² = 134672243855762, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8205829) 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 as a sum of consecutive naturals, namely, 4102929 + 4102930.

It is an arithmetic number, because the mean of its divisors is an integer number (4102930).

Almost surely, 2^8205859 is an apocalyptic number.

8205859 is a deficient number, since it is larger than the sum of its proper divisors (1).

8205859 is an equidigital number, since it uses as much as digits as its factorization.

8205859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 8205859 is about 2864.5870557552. The cubic root of 8205859 is about 201.7009839223.

The spelling of 8205859 in words is "eight million, two hundred five thousand, eight hundred fifty-nine".