9216999 has 24 divisors (see below), whose sum is σ = 14640912. Its totient is φ = 5541120.

The previous prime is 9216979. The next prime is 9217001. The reversal of 9216999 is 9996129.

It is a happy number.

It is not a de Polignac number, because 9216999 - 2¹⁹ = 8692711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9216979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15247 + ... + 15839.

It is an arithmetic number, because the mean of its divisors is an integer number (610038).

Almost surely, 2^9216999 is an apocalyptic number.

9216999 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

9216999 is a deficient number, since it is larger than the sum of its proper divisors (5423913).

9216999 is a wasteful number, since it uses less digits than its factorization.

9216999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 764 counting only the distinct ones).

The product of its digits is 78732, while the sum is 45.

The square root of 9216999 is about 3035.9510865625. The cubic root of 9216999 is about 209.6668868436. Note that the first 3 decimals are identical.

The spelling of 9216999 in words is "nine million, two hundred sixteen thousand, nine hundred ninety-nine".