Divisor 3988

To determine if any number is divisible by 3988, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 4 and 997 - then it is divisible by 3988.

The following tests must pass:

• Test if a number is divisible by 4
• Test if a number is divisible by 997

Easy!