8447224309 has 2 divisors, whose sum is σ = 8447224310. Its totient is φ = 8447224308.

The previous prime is 8447224297. The next prime is 8447224327. The reversal of 8447224309 is 9034227448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5976836100 + 2470388209 = 77310^2 + 49703^2 .

It is a cyclic number.

It is not a de Polignac number, because 8447224309 - 2⁹ = 8447223797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8447324309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223612154 + 4223612155.

It is an arithmetic number, because the mean of its divisors is an integer number (4223612155).

Almost surely, 2^8447224309 is an apocalyptic number.

It is an amenable number.

8447224309 is a deficient number, since it is larger than the sum of its proper divisors (1).

8447224309 is an equidigital number, since it uses as much as digits as its factorization.

8447224309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 8447224309 is about 91908.7825455217. The cubic root of 8447224309 is about 2036.5950110137.

The spelling of 8447224309 in words is "eight billion, four hundred forty-seven million, two hundred twenty-four thousand, three hundred nine".