808821229 has 2 divisors, whose sum is σ = 808821230. Its totient is φ = 808821228.

The previous prime is 808821173. The next prime is 808821283. The reversal of 808821229 is 922128808.

808821229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 594872100 + 213949129 = 24390^2 + 14627^2 .

It is a cyclic number.

It is not a de Polignac number, because 808821229 - 2¹¹ = 808819181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 808821191 and 808821200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808824229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404410614 + 404410615.

It is an arithmetic number, because the mean of its divisors is an integer number (404410615).

Almost surely, 2^808821229 is an apocalyptic number.

It is an amenable number.

808821229 is a deficient number, since it is larger than the sum of its proper divisors (1).

808821229 is an equidigital number, since it uses as much as digits as its factorization.

808821229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 808821229 is about 28439.7825062007. The cubic root of 808821229 is about 931.7173451496.

The spelling of 808821229 in words is "eight hundred eight million, eight hundred twenty-one thousand, two hundred twenty-nine".