921116 has 24 divisors (see below), whose sum is σ = 1873536. Its totient is φ = 388080.

The previous prime is 921091. The next prime is 921121. The reversal of 921116 is 611129.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

921116 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (78064).

2⁹²¹¹¹⁶ is an apocalyptic number.

It is an amenable number.

921116 is an abundant number, since it is smaller than the sum of its proper divisors (952420).

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

921116 is a wasteful number, since it uses less digits than its factorization.

921116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569 (or 567 counting only the distinct ones).

The product of its digits is 108, while the sum is 20.

The square root of 921116 is about 959.7478835611. The cubic root of 921116 is about 97.2981931488.

The spelling of 921116 in words is "nine hundred twenty-one thousand, one hundred sixteen".