4447221 has 4 divisors (see below), whose sum is σ = 5929632. Its totient is φ = 2964812.

The previous prime is 4447207. The next prime is 4447249. The reversal of 4447221 is 1227444.

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.

It is a cyclic number.

It is not a de Polignac number, because 4447221 - 2¹⁴ = 4430837 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4447191 and 4447200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4447321) 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, 741201 + ... + 741206.

It is an arithmetic number, because the mean of its divisors is an integer number (1482408).

Almost surely, 2^4447221 is an apocalyptic number.

It is an amenable number.

4447221 is a deficient number, since it is larger than the sum of its proper divisors (1482411).

4447221 is a wasteful number, since it uses less digits than its factorization.

4447221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482410.

The product of its digits is 1792, while the sum is 24.

The square root of 4447221 is about 2108.8435219333. The cubic root of 4447221 is about 164.4483690356.

The spelling of 4447221 in words is "four million, four hundred forty-seven thousand, two hundred twenty-one".