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
Solo 401(k) are not considered active businesses, and therefore are not subject to UBIT. The tax forms that apply to a Solo 401(k) can vary according to the assets and size of the plan. Here is a listing of the most common: Although both the Solo 401(k) and SEP IRA function as a retirement vehicle for self-employed individuals, the Solo 401(k) offers a number of features not found in the SEP. The after-tax contribution strategy is only available if the plan documents specifically allow for after-tax contributions. Solo 401(k) A Solo 401(k), (also known as a Self Employed 401(k) or Individual 401(k)),