9445221 has 16 divisors (see below), whose sum is σ = 14046720. Its totient is φ = 6272640.

The previous prime is 9445193. The next prime is 9445237. The reversal of 9445221 is 1225449.

It is not a de Polignac number, because 9445221 - 2²³ = 1056613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

9445221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9445021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9036 + ... + 10026.

It is an arithmetic number, because the mean of its divisors is an integer number (877920).

Almost surely, 2^9445221 is an apocalyptic number.

It is an amenable number.

9445221 is a deficient number, since it is larger than the sum of its proper divisors (4601499).

9445221 is a wasteful number, since it uses less digits than its factorization.

9445221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1347 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 9445221 is about 3073.3078270814. The cubic root of 9445221 is about 211.3833167561.

The spelling of 9445221 in words is "nine million, four hundred forty-five thousand, two hundred twenty-one".