4413221 has 4 divisors (see below), whose sum is σ = 4423500. Its totient is φ = 4402944.

The previous prime is 4413203. The next prime is 4413229. The reversal of 4413221 is 1223144.

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 3441025 + 972196 = 1855^2 + 986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4413221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4413221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4413229) 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 3 ways as a sum of consecutive naturals, for example, 4466 + ... + 5363.

It is an arithmetic number, because the mean of its divisors is an integer number (1105875).

Almost surely, 2^4413221 is an apocalyptic number.

It is an amenable number.

4413221 is a deficient number, since it is larger than the sum of its proper divisors (10279).

4413221 is an equidigital number, since it uses as much as digits as its factorization.

4413221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10278.

The product of its digits is 192, while the sum is 17.

The square root of 4413221 is about 2100.7667647790. The cubic root of 4413221 is about 164.0282149552.

Adding to 4413221 its reverse (1223144), we get a palindrome (5636365).

The spelling of 4413221 in words is "four million, four hundred thirteen thousand, two hundred twenty-one".