808420049 has 2 divisors, whose sum is σ = 808420050. Its totient is φ = 808420048.

The previous prime is 808420043. The next prime is 808420061. The reversal of 808420049 is 940024808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588935824 + 219484225 = 24268^2 + 14815^2 .

It is a cyclic number.

It is not a de Polignac number, because 808420049 - 2⁴ = 808420033 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (808420043) 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, 404210024 + 404210025.

It is an arithmetic number, because the mean of its divisors is an integer number (404210025).

Almost surely, 2^808420049 is an apocalyptic number.

It is an amenable number.

808420049 is a deficient number, since it is larger than the sum of its proper divisors (1).

808420049 is an equidigital number, since it uses as much as digits as its factorization.

808420049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 808420049 is about 28432.7284832110. The cubic root of 808420049 is about 931.5632739456.

The spelling of 808420049 in words is "eight hundred eight million, four hundred twenty thousand, forty-nine".