8317439993 has 2 divisors, whose sum is σ = 8317439994. Its totient is φ = 8317439992.

The previous prime is 8317439987. The next prime is 8317440037. The reversal of 8317439993 is 3999347138.

8317439993 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7446481849 + 870958144 = 86293^2 + 29512^2 .

It is a cyclic number.

It is not a de Polignac number, because 8317439993 - 2¹² = 8317435897 is a prime.

It is not a weakly prime, because it can be changed into another prime (8317439983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4158719996 + 4158719997.

It is an arithmetic number, because the mean of its divisors is an integer number (4158719997).

Almost surely, 2^8317439993 is an apocalyptic number.

It is an amenable number.

8317439993 is a deficient number, since it is larger than the sum of its proper divisors (1).

8317439993 is an equidigital number, since it uses as much as digits as its factorization.

8317439993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 56.

The square root of 8317439993 is about 91199.9999616228. Note that the first 4 decimals coincide. The cubic root of 8317439993 is about 2026.1109581827.

The spelling of 8317439993 in words is "eight billion, three hundred seventeen million, four hundred thirty-nine thousand, nine hundred ninety-three".