99996971 has 2 divisors, whose sum is σ = 99996972. Its totient is φ = 99996970.

The previous prime is 99996947. The next prime is 99996983. The reversal of 99996971 is 17969999.

It is a strong prime.

It is an emirp because it is prime and its reverse (17969999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99996971 - 2¹⁸ = 99734827 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99996971.

It is not a weakly prime, because it can be changed into another prime (99996931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49998485 + 49998486.

It is an arithmetic number, because the mean of its divisors is an integer number (49998486).

Almost surely, 2^99996971 is an apocalyptic number.

99996971 is a deficient number, since it is larger than the sum of its proper divisors (1).

99996971 is an equidigital number, since it uses as much as digits as its factorization.

99996971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2480058, while the sum is 59.

The square root of 99996971 is about 9999.8485488531. The cubic root of 99996971 is about 464.1541968564.

The spelling of 99996971 in words is "ninety-nine million, nine hundred ninety-six thousand, nine hundred seventy-one".