809282879 has 2 divisors, whose sum is σ = 809282880. Its totient is φ = 809282878.

The previous prime is 809282867. The next prime is 809282933. The reversal of 809282879 is 978282908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 809282879 - 2²⁰ = 808234303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 809282879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809282849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404641439 + 404641440.

It is an arithmetic number, because the mean of its divisors is an integer number (404641440).

Almost surely, 2^809282879 is an apocalyptic number.

809282879 is a deficient number, since it is larger than the sum of its proper divisors (1).

809282879 is an equidigital number, since it uses as much as digits as its factorization.

809282879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 809282879 is about 28447.8976200351. The cubic root of 809282879 is about 931.8945765280.

The spelling of 809282879 in words is "eight hundred nine million, two hundred eighty-two thousand, eight hundred seventy-nine".