9975084201

Appears in sequences

• Numbers n with the property that n=a-b where a has the digits of n in descending order and b has the digits of n in ascending order (perhaps with leading zeros), ordered by a.at n=10A055160
• Fixed points of the Kaprekar mapping f(n) = n' - n'', where in n' the digits of n are arranged in descending, in n'' in ascending order.at n=11A099009
• Smallest member of cycle corresponding to n-th term of A151964.at n=23A151965
• Subsequence of fixed points A099009 of the Kaprekar mapping with numbers of the form 9(x1+1)//8(x2)//7(x3+1)//6(x2)//5(x3+1)//4(x2)//3(x4)//2(x2)//1(x3)//0//9(x2)//8(x3+1)//7(x2)//6(x4)//5(x2)//4(x3+1)//3(x2)//2(x3+1)//1(x2)//0(x1)//1.at n=2A214559