808505029 has 2 divisors, whose sum is σ = 808505030. Its totient is φ = 808505028.

The previous prime is 808505021. The next prime is 808505053. The reversal of 808505029 is 920505808.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 527942529 + 280562500 = 22977^2 + 16750^2 .

It is a cyclic number.

It is not a de Polignac number, because 808505029 - 2³ = 808505021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808505021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404252514 + 404252515.

It is an arithmetic number, because the mean of its divisors is an integer number (404252515).

Almost surely, 2^808505029 is an apocalyptic number.

It is an amenable number.

808505029 is a deficient number, since it is larger than the sum of its proper divisors (1).

808505029 is an equidigital number, since it uses as much as digits as its factorization.

808505029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 808505029 is about 28434.2228485324. Note that the first 3 decimals coincide. The cubic root of 808505029 is about 931.5959143506.

The spelling of 808505029 in words is "eight hundred eight million, five hundred five thousand, twenty-nine".