Answer: No it's not
Step-by-step explanation:
To find whether 89987794 is divisible by 9 add all its digits first
So, 8 + 9 + 9 + 8 + 7 + 7 + 9 + 4 = 61
Now, is 61 divisible by nine? It's not, so it's not divisible by 9
Remember this: if the sum of the digits of a number is divisible by 9, then it's divisible by 9
