4044221 has 8 divisors (see below), whose sum is σ = 4126584. Its totient is φ = 3962880.

The previous prime is 4044217. The next prime is 4044223. The reversal of 4044221 is 1224404.

It can be written as a sum of positive squares in 4 ways, for example, as 1836025 + 2208196 = 1355^2 + 1486^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 4044221 - 2² = 4044217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4044221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4044223) 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, 16661 + ... + 16901.

It is an arithmetic number, because the mean of its divisors is an integer number (515823).

Almost surely, 2^4044221 is an apocalyptic number.

It is an amenable number.

4044221 is a deficient number, since it is larger than the sum of its proper divisors (82363).

4044221 is a wasteful number, since it uses less digits than its factorization.

4044221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 4044221 is about 2011.0248630984. The cubic root of 4044221 is about 159.3229331906.

Adding to 4044221 its reverse (1224404), we get a palindrome (5268625).

The spelling of 4044221 in words is "four million, forty-four thousand, two hundred twenty-one".