9084221 has 4 divisors (see below), whose sum is σ = 9397500. Its totient is φ = 8770944.

The previous prime is 9084217. The next prime is 9084233. The reversal of 9084221 is 1224809.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 4305625 = 2186^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 9084221 - 2² = 9084217 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9084211) 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 3 ways as a sum of consecutive naturals, for example, 156596 + ... + 156653.

It is an arithmetic number, because the mean of its divisors is an integer number (2349375).

Almost surely, 2^9084221 is an apocalyptic number.

It is an amenable number.

9084221 is a deficient number, since it is larger than the sum of its proper divisors (313279).

9084221 is a wasteful number, since it uses less digits than its factorization.

9084221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313278.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 9084221 is about 3014.0041473097. The cubic root of 9084221 is about 208.6552086150.

The spelling of 9084221 in words is "nine million, eighty-four thousand, two hundred twenty-one".