It is a congruent number.
It is an unprimeable number.
Almost surely, 210091000 is an apocalyptic number.
10091000 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.
10091000 is a wasteful number, since it uses less digits than its factorization.
10091000 is an odious number, because the sum of its binary digits is odd.
The square root of 10091000 is about 3176.6334380913. The cubic root of 10091000 is about 216.0950085012.
The spelling of 10091000 in words is "ten million, ninety-one thousand".