style="padding:2px 1px;text-align:left;vertical-align:bottom">American Century Mutual Funds, Inc. (the "Registrant") 1933 Act File No. 002-14213, Post-Effective Amendment No. 168 1940 Act File No. 811-00816, Amendment No. 167

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, the undersigned hereby certifies that the form of prospectus and statement of additional information that would have been f