2005859 has 2 divisors, whose sum is σ = 2005860. Its totient is φ = 2005858.

The previous prime is 2005841. The next prime is 2005873. The reversal of 2005859 is 9585002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2005859 is a prime.

It is a Sophie Germain prime.

It is equal to p₁₄₉₃₃₉ and since 2005859 and 149339 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (2005879) 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, 1002929 + 1002930.

It is an arithmetic number, because the mean of its divisors is an integer number (1002930).

2^2005859 is an apocalyptic number.

2005859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005859 is an equidigital number, since it uses as much as digits as its factorization.

2005859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 2005859 is about 1416.2835168143. The cubic root of 2005859 is about 126.1150163351.

The spelling of 2005859 in words is "two million, five thousand, eight hundred fifty-nine".