INTI

Yes. "INTI" is in the ENABLE word list, accepted by Words With Friends and most open Scrabble apps. It scores 4 points in Scrabble and 5 points in Words With Friends.

In Scrabble, "INTI" is worth 4 points before bonuses. In Words With Friends, it's worth 5 points. Played on a triple-word-score, the Scrabble value becomes 12.

The currency of Peru between 1985 and 1991, replacing the sol.

No, "INTI" has no anagrams in the ENABLE dictionary — it's the only word that can be formed from its exact letters.