4438221 has 8 divisors (see below), whose sum is σ = 5927424. Its totient is φ = 2953920.

The previous prime is 4438219. The next prime is 4438223. The reversal of 4438221 is 1228344.

It is an interprime number because it is at equal distance from previous prime (4438219) and next prime (4438223).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4438221 - 2¹ = 4438219 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4438191 and 4438200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4438223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2581 + ... + 3941.

It is an arithmetic number, because the mean of its divisors is an integer number (740928).

Almost surely, 2^4438221 is an apocalyptic number.

It is an amenable number.

4438221 is a deficient number, since it is larger than the sum of its proper divisors (1489203).

4438221 is a wasteful number, since it uses less digits than its factorization.

4438221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451.

The product of its digits is 1536, while the sum is 24.

The square root of 4438221 is about 2106.7085702584. The cubic root of 4438221 is about 164.3373607718.

The spelling of 4438221 in words is "four million, four hundred thirty-eight thousand, two hundred twenty-one".