545793domain: NAppears in sequencesSmallest number whose square has sum of digits A056991(n).at n=39A067179Square roots of A068809.at n=31A068947a(n) is the least integer k such that the sum of the digits of k^2 is 9*n.at n=10A369953Smallest k such that the sum of digits of k^2 in base 10 is divisible by n.at n=29A389004