8452320809 has 2 divisors, whose sum is σ = 8452320810. Its totient is φ = 8452320808.

The previous prime is 8452320781. The next prime is 8452320817. The reversal of 8452320809 is 9080232548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8338429225 + 113891584 = 91315^2 + 10672^2 .

It is a cyclic number.

It is not a de Polignac number, because 8452320809 - 2⁸ = 8452320553 is a prime.

It is not a weakly prime, because it can be changed into another prime (8452320839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226160404 + 4226160405.

It is an arithmetic number, because the mean of its divisors is an integer number (4226160405).

Almost surely, 2^8452320809 is an apocalyptic number.

It is an amenable number.

8452320809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8452320809 is an equidigital number, since it uses as much as digits as its factorization.

8452320809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 8452320809 is about 91936.5042243830. The cubic root of 8452320809 is about 2037.0045111980.

The spelling of 8452320809 in words is "eight billion, four hundred fifty-two million, three hundred twenty thousand, eight hundred nine".