8491329499 has 2 divisors, whose sum is σ = 8491329500. Its totient is φ = 8491329498.

The previous prime is 8491329437. The next prime is 8491329521. The reversal of 8491329499 is 9949231948.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8491329499 - 2⁹ = 8491328987 is a prime.

It is not a weakly prime, because it can be changed into another prime (8491329799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245664749 + 4245664750.

It is an arithmetic number, because the mean of its divisors is an integer number (4245664750).

Almost surely, 2^8491329499 is an apocalyptic number.

8491329499 is a deficient number, since it is larger than the sum of its proper divisors (1).

8491329499 is an equidigital number, since it uses as much as digits as its factorization.

8491329499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 58.

The square root of 8491329499 is about 92148.4101816195. The cubic root of 8491329499 is about 2040.1333934144.

The spelling of 8491329499 in words is "eight billion, four hundred ninety-one million, three hundred twenty-nine thousand, four hundred ninety-nine".