808820959 has 2 divisors, whose sum is σ = 808820960. Its totient is φ = 808820958.

The previous prime is 808820953. The next prime is 808820977. The reversal of 808820959 is 959028808.

It is a happy number.

808820959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 808820959 - 2²³ = 800432351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808820953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404410479 + 404410480.

It is an arithmetic number, because the mean of its divisors is an integer number (404410480).

Almost surely, 2^808820959 is an apocalyptic number.

808820959 is a deficient number, since it is larger than the sum of its proper divisors (1).

808820959 is an equidigital number, since it uses as much as digits as its factorization.

808820959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 808820959 is about 28439.7777593286. Note that the first 4 decimals coincide. The cubic root of 808820959 is about 931.7172414745.

The spelling of 808820959 in words is "eight hundred eight million, eight hundred twenty thousand, nine hundred fifty-nine".