6999999

Appears in sequences

• a(n) is the smallest composite number with the sum of digits = the n-th composite number.at n=41A073866
• Smallest number whose sum of digits is 3n.at n=20A133195
• Smallest number whose sum of digits is 2n.at n=30A133296
• Minimum number k for which the digital sum of k*n is 6*n.at n=10A147826
• a(n) = 7*10^n - 1.at n=6A198699
• Smallest n-digit integer x such that x + A007954(x) has n+1 digits, where A007954(x) is the product of decimal digits of x.at n=6A243219