9867394788473 has 2 divisors, whose sum is σ = 9867394788474. Its totient is φ = 9867394788472.

The previous prime is 9867394788451. The next prime is 9867394788529. The reversal of 9867394788473 is 3748874937689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8363357450809 + 1504037337664 = 2891947^2 + 1226392^2 .

It is a cyclic number.

It is not a de Polignac number, because 9867394788473 - 2¹⁶ = 9867394722937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9867394788391 and 9867394788400.

It is not a weakly prime, because it can be changed into another prime (9867384788473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933697394236 + 4933697394237.

It is an arithmetic number, because the mean of its divisors is an integer number (4933697394237).

Almost surely, 2^{9867394788473} is an apocalyptic number.

It is an amenable number.

9867394788473 is a deficient number, since it is larger than the sum of its proper divisors (1).

9867394788473 is an equidigital number, since it uses as much as digits as its factorization.

9867394788473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12290310144, while the sum is 83.

The spelling of 9867394788473 in words is "nine trillion, eight hundred sixty-seven billion, three hundred ninety-four million, seven hundred eighty-eight thousand, four hundred seventy-three".