8343809 has 2 divisors, whose sum is σ = 8343810. Its totient is φ = 8343808.

The previous prime is 8343791. The next prime is 8343857. The reversal of 8343809 is 9083438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6250000 + 2093809 = 2500^2 + 1447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8343809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8343859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171904 + 4171905.

It is an arithmetic number, because the mean of its divisors is an integer number (4171905).

Almost surely, 2^8343809 is an apocalyptic number.

It is an amenable number.

8343809 is a deficient number, since it is larger than the sum of its proper divisors (1).

8343809 is an equidigital number, since it uses as much as digits as its factorization.

8343809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 8343809 is about 2888.5652147736. The cubic root of 8343809 is about 202.8249844404.

The spelling of 8343809 in words is "eight million, three hundred forty-three thousand, eight hundred nine".