4463221 has 4 divisors (see below), whose sum is σ = 5100832. Its totient is φ = 3825612.

The previous prime is 4463213. The next prime is 4463243. The reversal of 4463221 is 1223644.

It is a happy number.

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 not a de Polignac number, because 4463221 - 2³ = 4463213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4463192 and 4463201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4463321) 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, 318795 + ... + 318808.

It is an arithmetic number, because the mean of its divisors is an integer number (1275208).

Almost surely, 2^4463221 is an apocalyptic number.

It is an amenable number.

4463221 is a deficient number, since it is larger than the sum of its proper divisors (637611).

4463221 is an equidigital number, since it uses as much as digits as its factorization.

4463221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637610.

The product of its digits is 1152, while the sum is 22.

The square root of 4463221 is about 2112.6336644104. The cubic root of 4463221 is about 164.6453478349.

Adding to 4463221 its reverse (1223644), we get a palindrome (5686865).

The spelling of 4463221 in words is "four million, four hundred sixty-three thousand, two hundred twenty-one".