It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 8216911.
It is a congruent number.
Almost surely, 28216911 is an apocalyptic number.
8216911 is the 2341-st centered triangular number.
8216911 is a wasteful number, since it uses less digits than its factorization.
8216911 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 18845.
The square root of 8216911 is about 2866.5154805094. The cubic root of 8216911 is about 201.7914964545.
The spelling of 8216911 in words is "eight million, two hundred sixteen thousand, nine hundred eleven".