8243248709 has 2 divisors, whose sum is σ = 8243248710. Its totient is φ = 8243248708.

The previous prime is 8243248703. The next prime is 8243248747. The reversal of 8243248709 is 9078423428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7855276900 + 387971809 = 88630^2 + 19697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8243248709 is a prime.

It is a super-2 number, since 2×8243248709² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8243248703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4121624354 + 4121624355.

It is an arithmetic number, because the mean of its divisors is an integer number (4121624355).

Almost surely, 2^8243248709 is an apocalyptic number.

It is an amenable number.

8243248709 is a deficient number, since it is larger than the sum of its proper divisors (1).

8243248709 is an equidigital number, since it uses as much as digits as its factorization.

8243248709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 8243248709 is about 90792.3383827072. The cubic root of 8243248709 is about 2020.0686763077.

The spelling of 8243248709 in words is "eight billion, two hundred forty-three million, two hundred forty-eight thousand, seven hundred nine".