4344221 has 4 divisors (see below), whose sum is σ = 4964832. Its totient is φ = 3723612.

The previous prime is 4344187. The next prime is 4344227. The reversal of 4344221 is 1224434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1224434 = 2 ⋅612217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4344221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4344193 and 4344202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4344227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310295 + ... + 310308.

It is an arithmetic number, because the mean of its divisors is an integer number (1241208).

Almost surely, 2^4344221 is an apocalyptic number.

It is an amenable number.

4344221 is a deficient number, since it is larger than the sum of its proper divisors (620611).

4344221 is an equidigital number, since it uses as much as digits as its factorization.

4344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620610.

The product of its digits is 768, while the sum is 20.

The square root of 4344221 is about 2084.2794918149. The cubic root of 4344221 is about 163.1688691141.

Adding to 4344221 its reverse (1224434), we get a palindrome (5568655).

The spelling of 4344221 in words is "four million, three hundred forty-four thousand, two hundred twenty-one".