9221140 has 48 divisors (see below), whose sum is σ = 21086352. Its totient is φ = 3373056.

The previous prime is 9221131. The next prime is 9221161. The reversal of 9221140 is 411229.

It can be written as a sum of positive squares in 8 ways, for example, as 3139984 + 6081156 = 1772^2 + 2466^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12214 + ... + 12946.

It is an arithmetic number, because the mean of its divisors is an integer number (439299).

Almost surely, 2^9221140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9221140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10543176).

9221140 is an abundant number, since it is smaller than the sum of its proper divisors (11865212).

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

9221140 is a wasteful number, since it uses less digits than its factorization.

9221140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 9221140 is about 3036.6330038383. The cubic root of 9221140 is about 209.6982817544.

Adding to 9221140 its reverse (411229), we get a palindrome (9632369).

The spelling of 9221140 in words is "nine million, two hundred twenty-one thousand, one hundred forty".