99809948297 has 2 divisors, whose sum is σ = 99809948298. Its totient is φ = 99809948296.

The previous prime is 99809948269. The next prime is 99809948309. The reversal of 99809948297 is 79284990899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73881219721 + 25928728576 = 271811^2 + 161024^2 .

It is a cyclic number.

It is not a de Polignac number, because 99809948297 - 2⁸ = 99809948041 is a prime.

It is not a weakly prime, because it can be changed into another prime (99809948257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49904974148 + 49904974149.

It is an arithmetic number, because the mean of its divisors is an integer number (49904974149).

Almost surely, 2^99809948297 is an apocalyptic number.

It is an amenable number.

99809948297 is a deficient number, since it is larger than the sum of its proper divisors (1).

99809948297 is an equidigital number, since it uses as much as digits as its factorization.

99809948297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211631616, while the sum is 74.

The spelling of 99809948297 in words is "ninety-nine billion, eight hundred nine million, nine hundred forty-eight thousand, two hundred ninety-seven".