9238221 has 12 divisors (see below), whose sum is σ = 13406848. Its totient is φ = 6129864.

The previous prime is 9238193. The next prime is 9238231. The reversal of 9238221 is 1228329.

It is a happy number.

It is not a de Polignac number, because 9238221 - 2⁵ = 9238189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9238231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295 + ... + 4308.

Almost surely, 2^9238221 is an apocalyptic number.

It is an amenable number.

9238221 is a deficient number, since it is larger than the sum of its proper divisors (4168627).

9238221 is a wasteful number, since it uses less digits than its factorization.

9238221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4832 (or 4829 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 9238221 is about 3039.4441926115. Note that the first 3 decimals coincide. The cubic root of 9238221 is about 209.8276817700.

The spelling of 9238221 in words is "nine million, two hundred thirty-eight thousand, two hundred twenty-one".