Many Americans are worried about high inflation, rising interest rates, and increased costs for everything from groceries to rent. Yet, despite all the economic anxiety, there’s a surprising bright spot: the number of 401(k) millionaires has hit an all-time high. Don’t Miss: The average American couple has saved this much money for retirement —How do you compare?Can you guess how many Americans successfully retire with $1,000,000 saved?The percentage may shock you.A new report from Fidelity Investments shows a record 497,000 people in the U.S. with over a million dollars in their 401(k) accoun…