9921366 has 80 divisors (see below), whose sum is σ = 27402144. Its totient is φ = 2612736.

The previous prime is 9921343. The next prime is 9921383. The reversal of 9921366 is 6631299.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 9921366.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 14406 + ... + 15078.

Almost surely, 2^9921366 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9921366, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13701072).

9921366 is an abundant number, since it is smaller than the sum of its proper divisors (17480778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9921366 is a wasteful number, since it uses less digits than its factorization.

9921366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 698 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 9921366 is about 3149.8199948568. The cubic root of 9921366 is about 214.8772762750.

The spelling of 9921366 in words is "nine million, nine hundred twenty-one thousand, three hundred sixty-six".