Subtracting from 1009100 its reverse (19001), we obtain a palindrome (990099).
It is an unprimeable number.
21009100 is an apocalyptic number.
1009100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1009100 is a wasteful number, since it uses less digits than its factorization.
1009100 is an evil number, because the sum of its binary digits is even.
The square root of 1009100 is about 1004.5396955820. The cubic root of 1009100 is about 100.3024178459.
The spelling of 1009100 in words is "one million, nine thousand, one hundred".