79999993

Appears in sequences

• a(n) = 8*10^n - 7.at n=7A100412
• Numbers n such that phi(n)+sigma(n)=4*reversal(n).at n=3A136543
• Numbers k such that 2*reverse(k) - k = 1.at n=7A169830
• Numbers m whose reversal divides m+1.at n=25A247201