400 (number) third perfect number, a number whose divisors add up to the actual number (1+2+4+8+16+31+62+124+248=496). 497 = 7 × 71, sum of five consecutive primes (89 + 97 + 101 + 103 + 107) 498 = 2 × 3 × 83, sphenic number, untouchable number, admirable number, abundant number A prime number, Chen prime 400 (number) 400 (four hundred) is the natural number following 399 and preceding 401. 400 is the square of 20. 400 is the sum of the powers of 7 from 0 to 3, thus making it a repdigit in base 7 (1111). A circle is divided into
Special routes of U.S. Route 401 Harris Avenue, Main Street, and Central Avenue. U.S. Route 401 Business (US 401 Bus) was established in late 1960s from a renumbering of US 401, this business loop goes through Fayetteville via Raeford Road, Robeson Street, Martin Luther King Jr Freeway, and Ramsey Street. U.S. Route 401 Business (US 401 Bus) is an business loop along Main Street, through downtown Rolesville. Approved by AASHTO on May 29, 2014; its official establishment is dependent on the opening of the Rolesville bypass, which will be signed as US 401. On July 16, 2015, the Rolesville bypass opened. U.S. Route 401 Business (US