Psalm 17 is a most fitting prayer to our Father in heaven for protection from the wicked and deadly enemies. In verses 8 and 9, we know why: we are the apple of His eye!
8 Guard me as the apple of your eye;
hide me in the shadow of your wings
9 from the wicked who treat me with violence,
from deadly enemies who surround me.
It is so humbling to know we are the apple of His eye!.
Since the Book of Psalm is the 19th book of the Bible, the identifier of chapter 17 verse 8 is (19+17+8=44) and that of verse 9 is therefore 45. The sum is 44+45=89. The 89th sphenic number is 670. Note that a sphenic number is a positive integer that is the product of three distinct prime numbers. In our case, 670=2x5x67. The number 670 has 8 divisors given in the set {1, 2, 5, 10, 67, 134, 335, 670}. The sum of the divisors is 1224. Hence, the arithmetic mean of the divisors is 1224/8=153.
CONCLUSION. When we pray the Lord’s Prayer, we petition our Father in heaven to guard us as the apple of His eye and hide us in the shadow of His wings from the wicked who treat us with violence and from deadly enemies who surround us.
The Lord's Prayer: A Mathematician's Creed 