8010809 has 2 divisors, whose sum is σ = 8010810. Its totient is φ = 8010808.

The previous prime is 8010749. The next prime is 8010817. The reversal of 8010809 is 9080108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7997584 + 13225 = 2828^2 + 115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8010809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8010839) 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, 4005404 + 4005405.

It is an arithmetic number, because the mean of its divisors is an integer number (4005405).

Almost surely, 2^8010809 is an apocalyptic number.

It is an amenable number.

8010809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8010809 is an equidigital number, since it uses as much as digits as its factorization.

8010809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 8010809 is about 2830.3372590559. The cubic root of 8010809 is about 200.0900344629.

The spelling of 8010809 in words is "eight million, ten thousand, eight hundred nine".