8198791 has 2 divisors, whose sum is σ = 8198792. Its totient is φ = 8198790.

The previous prime is 8198789. The next prime is 8198797. The reversal of 8198791 is 1978918.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8198791 - 2¹ = 8198789 is a prime.

Together with 8198789, 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 (8198797) 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, 4099395 + 4099396.

It is an arithmetic number, because the mean of its divisors is an integer number (4099396).

Almost surely, 2^8198791 is an apocalyptic number.

8198791 is a deficient number, since it is larger than the sum of its proper divisors (1).

8198791 is an equidigital number, since it uses as much as digits as its factorization.

8198791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 43.

The square root of 8198791 is about 2863.3531043167. The cubic root of 8198791 is about 201.6430565291.

The spelling of 8198791 in words is "eight million, one hundred ninety-eight thousand, seven hundred ninety-one".