What is "shebitku"

Shebitku (also Shabataka or Shebitqo) was the third king of the Twenty-fifth Dynasty of Egypt who ruled from 707/706 BC-690 BC, according to Dan'el Kahn's most recent academic research of the Tang-i Var inscription. Shebitku was the nephew and successor of Shabaka. He was a son of Piye, the founder of this dynasty. Shebitku's prenomen or throne name, Djedkare, means "Enduring is the Soul of Re."