Divisor 4399

To determine if any number is divisible by 4399, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 53 and 83 - then it is divisible by 4399.

The following tests must pass:

• Test if a number is divisible by 53
• Test if a number is divisible by 83

Easy!