Number Riddle

Hi, my name is Valerian. I am the fourth grader of Batari school. Today, we learn number riddles during Math lesson. This is what I create.
Check it out!

-. The digit in the tens and ones is 9 x 9 + 8
-. The digit in the hundreds is 1987 - 1976
-. The digit in the ten thousands is 100 - 89

What is my number?

Can you guess?