9865963773 has 6 divisors (see below), whose sum is σ = 14250836574. Its totient is φ = 6577309176.

The previous prime is 9865963759. The next prime is 9865963777. The reversal of 9865963773 is 3773695689.

9865963773 is a `hidden beast` number, since 9 + 8 + 6 + 596 + 37 + 7 + 3 = 666.

9865963773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7225340004 + 2640623769 = 85002^2 + 51387^2 .

It is not a de Polignac number, because 9865963773 - 2¹⁴ = 9865947389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9865963773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9865963777) 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 in 5 ways as a sum of consecutive naturals, for example, 548109090 + ... + 548109107.

It is an arithmetic number, because the mean of its divisors is an integer number (2375139429).

Almost surely, 2^9865963773 is an apocalyptic number.

It is an amenable number.

9865963773 is a deficient number, since it is larger than the sum of its proper divisors (4384872801).

9865963773 is a wasteful number, since it uses less digits than its factorization.

9865963773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096218203 (or 1096218200 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The square root of 9865963773 is about 99327.5579736057. The cubic root of 9865963773 is about 2144.7656170458.

The spelling of 9865963773 in words is "nine billion, eight hundred sixty-five million, nine hundred sixty-three thousand, seven hundred seventy-three".