800222309 has 2 divisors, whose sum is σ = 800222310. Its totient is φ = 800222308.

The previous prime is 800222281. The next prime is 800222321. The reversal of 800222309 is 903222008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784840225 + 15382084 = 28015^2 + 3922^2 .

It is a cyclic number.

It is not a de Polignac number, because 800222309 - 2¹² = 800218213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800222359) 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, 400111154 + 400111155.

It is an arithmetic number, because the mean of its divisors is an integer number (400111155).

Almost surely, 2^800222309 is an apocalyptic number.

It is an amenable number.

800222309 is a deficient number, since it is larger than the sum of its proper divisors (1).

800222309 is an equidigital number, since it uses as much as digits as its factorization.

800222309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 800222309 is about 28288.2008795187. The cubic root of 800222309 is about 928.4037476731.

The spelling of 800222309 in words is "eight hundred million, two hundred twenty-two thousand, three hundred nine".