Atum is an ancient Egyptian deity often associated with creation and the sun. He is considered one of the first gods in the Egyptian pantheon and is believed to have created himself from the primordial waters of Nun. Atum is typically depicted as a man wearing a crown and sometimes holding a scepter, symbolizing his authority. In Egyptian mythology, Atum is credited with bringing forth other gods, including Shu and Tefnut, through an act of self-generation. He represents the setting sun and is often linked to the cycle of life and death, embodying the concept of renewal and the eternal nature of existence.