805084859 has 2 divisors, whose sum is σ = 805084860. Its totient is φ = 805084858.

The previous prime is 805084843. The next prime is 805084867. The reversal of 805084859 is 958480508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805084859 - 2⁴ = 805084843 is a prime.

It is not a weakly prime, because it can be changed into another prime (805084879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402542429 + 402542430.

It is an arithmetic number, because the mean of its divisors is an integer number (402542430).

Almost surely, 2^805084859 is an apocalyptic number.

805084859 is a deficient number, since it is larger than the sum of its proper divisors (1).

805084859 is an equidigital number, since it uses as much as digits as its factorization.

805084859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 805084859 is about 28374.0173221911. The cubic root of 805084859 is about 930.2804330230.

The spelling of 805084859 in words is "eight hundred five million, eighty-four thousand, eight hundred fifty-nine".