9983971 has 2 divisors, whose sum is σ = 9983972. Its totient is φ = 9983970.

The previous prime is 9983959. The next prime is 9983977. The reversal of 9983971 is 1793899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9983971 - 2¹⁹ = 9459683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9983977) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991985 + 4991986.

It is an arithmetic number, because the mean of its divisors is an integer number (4991986).

Almost surely, 2^9983971 is an apocalyptic number.

9983971 is a deficient number, since it is larger than the sum of its proper divisors (1).

9983971 is an equidigital number, since it uses as much as digits as its factorization.

9983971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 46.

The square root of 9983971 is about 3159.7422363225. The cubic root of 9983971 is about 215.3282959988.

The spelling of 9983971 in words is "nine million, nine hundred eighty-three thousand, nine hundred seventy-one".