What is 8 to the power of 9 ?What is 8 to the power of 9 ?Solution: 89 = 134,217,728simplify this: All that is needed is to multiply it out:8 x 8 x 8 x 8 x 8 x 8 x 8 x 8 x 8 = 134,217,728 So, 8 to the power of 9 is 134,217,728.