8317970249 has 2 divisors, whose sum is σ = 8317970250. Its totient is φ = 8317970248.

The previous prime is 8317970237. The next prime is 8317970257. The reversal of 8317970249 is 9420797138.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6731382025 + 1586588224 = 82045^2 + 39832^2 .

It is a cyclic number.

It is not a de Polignac number, because 8317970249 - 2²⁰ = 8316921673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8317970197 and 8317970206.

It is not a weakly prime, because it can be changed into another prime (8317970449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4158985124 + 4158985125.

It is an arithmetic number, because the mean of its divisors is an integer number (4158985125).

Almost surely, 2^8317970249 is an apocalyptic number.

It is an amenable number.

8317970249 is a deficient number, since it is larger than the sum of its proper divisors (1).

8317970249 is an equidigital number, since it uses as much as digits as its factorization.

8317970249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 8317970249 is about 91202.9070205550. The cubic root of 8317970249 is about 2026.1540136846.

The spelling of 8317970249 in words is "eight billion, three hundred seventeen million, nine hundred seventy thousand, two hundred forty-nine".