8022809 has 2 divisors, whose sum is σ = 8022810. Its totient is φ = 8022808.

The previous prime is 8022803. The next prime is 8022823. The reversal of 8022809 is 9082208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4305625 + 3717184 = 2075^2 + 1928^2 .

It is a cyclic number.

It is not a de Polignac number, because 8022809 - 2¹⁶ = 7957273 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8022803) 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, 4011404 + 4011405.

It is an arithmetic number, because the mean of its divisors is an integer number (4011405).

Almost surely, 2^8022809 is an apocalyptic number.

It is an amenable number.

8022809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8022809 is an equidigital number, since it uses as much as digits as its factorization.

8022809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 8022809 is about 2832.4563544740. The cubic root of 8022809 is about 200.1898946431.

The spelling of 8022809 in words is "eight million, twenty-two thousand, eight hundred nine".