9927696689 has 2 divisors, whose sum is σ = 9927696690. Its totient is φ = 9927696688.

The previous prime is 9927696679. The next prime is 9927696697. The reversal of 9927696689 is 9866967299.

9927696689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9819224464 + 108472225 = 99092^2 + 10415^2 .

It is a cyclic number.

It is not a de Polignac number, because 9927696689 - 2²⁸ = 9659261233 is a prime.

It is not a weakly prime, because it can be changed into another prime (9927696629) 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, 4963848344 + 4963848345.

It is an arithmetic number, because the mean of its divisors is an integer number (4963848345).

Almost surely, 2^9927696689 is an apocalyptic number.

It is an amenable number.

9927696689 is a deficient number, since it is larger than the sum of its proper divisors (1).

9927696689 is an equidigital number, since it uses as much as digits as its factorization.

9927696689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158723712, while the sum is 71.

The square root of 9927696689 is about 99637.8276007662. The cubic root of 9927696689 is about 2149.2296998212.

The spelling of 9927696689 in words is "nine billion, nine hundred twenty-seven million, six hundred ninety-six thousand, six hundred eighty-nine".