8649009671 has 2 divisors, whose sum is σ = 8649009672. Its totient is φ = 8649009670.

The previous prime is 8649009583. The next prime is 8649009679. The reversal of 8649009671 is 1769009468.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8649009671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8649009679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4324504835 + 4324504836.

It is an arithmetic number, because the mean of its divisors is an integer number (4324504836).

Almost surely, 2^8649009671 is an apocalyptic number.

8649009671 is a deficient number, since it is larger than the sum of its proper divisors (1).

8649009671 is an equidigital number, since it uses as much as digits as its factorization.

8649009671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 8649009671 is about 93000.0519946091. The cubic root of 8649009671 is about 2052.6841438191.

The spelling of 8649009671 in words is "eight billion, six hundred forty-nine million, nine thousand, six hundred seventy-one".