8163971 has 2 divisors, whose sum is σ = 8163972. Its totient is φ = 8163970.

The previous prime is 8163929. The next prime is 8163983. The reversal of 8163971 is 1793618.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8163971 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8163271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4081985 + 4081986.

It is an arithmetic number, because the mean of its divisors is an integer number (4081986).

Almost surely, 2^8163971 is an apocalyptic number.

8163971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8163971 is an equidigital number, since it uses as much as digits as its factorization.

8163971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 8163971 is about 2857.2663509026. The cubic root of 8163971 is about 201.3571942857.

The spelling of 8163971 in words is "eight million, one hundred sixty-three thousand, nine hundred seventy-one".