4163221 has 8 divisors (see below), whose sum is σ = 4256000. Its totient is φ = 4071600.

The previous prime is 4163219. The next prime is 4163231. The reversal of 4163221 is 1223614.

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 4163221 - 2¹ = 4163219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4163231) 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 7 ways as a sum of consecutive naturals, for example, 11755 + ... + 12103.

It is an arithmetic number, because the mean of its divisors is an integer number (532000).

Almost surely, 2^4163221 is an apocalyptic number.

It is an amenable number.

4163221 is a deficient number, since it is larger than the sum of its proper divisors (92779).

4163221 is a wasteful number, since it uses less digits than its factorization.

4163221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its digits is 288, while the sum is 19.

The square root of 4163221 is about 2040.3972652403. The cubic root of 4163221 is about 160.8705284737.

Adding to 4163221 its reverse (1223614), we get a palindrome (5386835).

The spelling of 4163221 in words is "four million, one hundred sixty-three thousand, two hundred twenty-one".