4442021 has 4 divisors (see below), whose sum is σ = 4585344. Its totient is φ = 4298700.

The previous prime is 4442003. The next prime is 4442027. The reversal of 4442021 is 1202444.

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 4442021 - 2²² = 247717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4442027) 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, 71615 + ... + 71676.

It is an arithmetic number, because the mean of its divisors is an integer number (1146336).

Almost surely, 2^4442021 is an apocalyptic number.

It is an amenable number.

4442021 is a deficient number, since it is larger than the sum of its proper divisors (143323).

4442021 is a wasteful number, since it uses less digits than its factorization.

4442021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143322.

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

The square root of 4442021 is about 2107.6102580885. The cubic root of 4442021 is about 164.3842492157.

Adding to 4442021 its reverse (1202444), we get a palindrome (5644465).

The spelling of 4442021 in words is "four million, four hundred forty-two thousand, twenty-one".