4441021 has 4 divisors (see below), whose sum is σ = 4782652. Its totient is φ = 4099392.

The previous prime is 4441009. The next prime is 4441033. The reversal of 4441021 is 1201444.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (4441009) and next prime (4441033).

It can be written as a sum of positive squares in 2 ways, for example, as 1836025 + 2604996 = 1355^2 + 1614^2 .

It is a cyclic number.

It is not a de Polignac number, because 4441021 - 2¹³ = 4432829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4440986 and 4441004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4441621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170796 + ... + 170821.

It is an arithmetic number, because the mean of its divisors is an integer number (1195663).

Almost surely, 2^4441021 is an apocalyptic number.

It is an amenable number.

4441021 is a deficient number, since it is larger than the sum of its proper divisors (341631).

4441021 is a wasteful number, since it uses less digits than its factorization.

4441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341630.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4441021 is about 2107.3730092226. The cubic root of 4441021 is about 164.3719127450.

Adding to 4441021 its reverse (1201444), we get a palindrome (5642465).

The spelling of 4441021 in words is "four million, four hundred forty-one thousand, twenty-one".