9766805869 has 2 divisors, whose sum is σ = 9766805870. Its totient is φ = 9766805868.

The previous prime is 9766805801. The next prime is 9766805911. The reversal of 9766805869 is 9685086679.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9421031844 + 345774025 = 97062^2 + 18595^2 .

It is a cyclic number.

It is not a de Polignac number, because 9766805869 - 2⁹ = 9766805357 is a prime.

It is a super-2 number, since 2×9766805869² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9766805869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9766803869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4883402934 + 4883402935.

It is an arithmetic number, because the mean of its divisors is an integer number (4883402935).

Almost surely, 2^9766805869 is an apocalyptic number.

It is an amenable number.

9766805869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9766805869 is an equidigital number, since it uses as much as digits as its factorization.

9766805869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The square root of 9766805869 is about 98827.1514767070. The cubic root of 9766805869 is about 2137.5560848638.

The spelling of 9766805869 in words is "nine billion, seven hundred sixty-six million, eight hundred five thousand, eight hundred sixty-nine".