Mut (𓏏𓁅) is the ancient Egyptian word for "mother" — also the name of the great mother goddess of Thebes.
Her temple at Karnak is among the largest in Egypt.
Mut does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
In Pythagorean numerology the letters of Mut reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.