8247223813 has 2 divisors, whose sum is σ = 8247223814. Its totient is φ = 8247223812.

The previous prime is 8247223811. The next prime is 8247223823. The reversal of 8247223813 is 3183227428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4496641249 + 3750582564 = 67057^2 + 61242^2 .

It is a cyclic number.

It is not a de Polignac number, because 8247223813 - 2¹ = 8247223811 is a prime.

Together with 8247223811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8247223811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4123611906 + 4123611907.

It is an arithmetic number, because the mean of its divisors is an integer number (4123611907).

Almost surely, 2^8247223813 is an apocalyptic number.

It is an amenable number.

8247223813 is a deficient number, since it is larger than the sum of its proper divisors (1).

8247223813 is an equidigital number, since it uses as much as digits as its factorization.

8247223813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 40.

The square root of 8247223813 is about 90814.2269305862. The cubic root of 8247223813 is about 2020.3933336101.

The spelling of 8247223813 in words is "eight billion, two hundred forty-seven million, two hundred twenty-three thousand, eight hundred thirteen".