9843221 has 8 divisors (see below), whose sum is σ = 10704600. Its totient is φ = 9013248.

The previous prime is 9843217. The next prime is 9843233. The reversal of 9843221 is 1223489.

It can be written as a sum of positive squares in 4 ways, for example, as 3010225 + 6832996 = 1735^2 + 2614^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9843221 - 2² = 9843217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9843521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7196 + ... + 8453.

It is an arithmetic number, because the mean of its divisors is an integer number (1338075).

Almost surely, 2^9843221 is an apocalyptic number.

It is an amenable number.

9843221 is a deficient number, since it is larger than the sum of its proper divisors (861379).

9843221 is a wasteful number, since it uses less digits than its factorization.

9843221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15703.

The product of its digits is 3456, while the sum is 29.

The square root of 9843221 is about 3137.3907949122. The cubic root of 9843221 is about 214.3116329073.

The spelling of 9843221 in words is "nine million, eight hundred forty-three thousand, two hundred twenty-one".