1444221 has 12 divisors (see below), whose sum is σ = 2142972. Its totient is φ = 936576.

The previous prime is 1444217. The next prime is 1444237. The reversal of 1444221 is 1224441.

1444221 is a `hidden beast` number, since 1 + 444 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 562500 + 881721 = 750^2 + 939^2 .

It is not a de Polignac number, because 1444221 - 2² = 1444217 is a prime.

It is a Curzon number.

1444221 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1444194 and 1444203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1836 + ... + 2501.

It is an arithmetic number, because the mean of its divisors is an integer number (178581).

2^1444221 is an apocalyptic number.

It is an amenable number.

1444221 is a deficient number, since it is larger than the sum of its proper divisors (698751).

1444221 is a wasteful number, since it uses less digits than its factorization.

1444221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380 (or 4377 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 1444221 is about 1201.7574630515. The cubic root of 1444221 is about 113.0345523074.

Adding to 1444221 its reverse (1224441), we get a palindrome (2668662).

The spelling of 1444221 in words is "one million, four hundred forty-four thousand, two hundred twenty-one".