Which is the greatest 4 digit integer?

Which is the smallest 4 digit integer with all different digits?

Which is the greatest 4 digit integer with all different digits?

What is the difference between the smallest 4 digit integer and the greatest 3 digit integer?

What is the difference between the smallest 40 digit integer and the greatest integer of 39 digits?

What is the difference between the smallest 4 digit integer and the smallest 3 digit integer?

What is the difference between the greatest 4 digit integer and the greatest 3 digit integer?