Write a program that takes an integer input representing a fictitious 9-digit Social Security Number (SSN) and formats it with hyphens. The output should be in the format "XXX-XX-XXXX," where "XXX" represents the first three digits, "XX" represents the next two digits, and "XXXX" represents the last four digits.

For example, if the input is 123456789, the program should output:

123-45-6789

Your program should handle inputs that are valid 9-digit Social Security Numbers, and it should format them as specified.

Constraints:

The input is an integer representing a fictitious 9-digit Social Security Number (SSN).
The input will always be a valid 9-digit SSN.
The output should be in the format "XXX-XX-XXXX," where "XXX" represents the first three digits, "XX" represents the next two digits, and "XXXX" represents the last four digits.