2444443021 has 4 divisors (see below), whose sum is σ = 2457241344. Its totient is φ = 2431644700.

The previous prime is 2444442991. The next prime is 2444443049. The reversal of 2444443021 is 1203444442.

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 2444443021 - 2¹⁷ = 2444311949 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 (2444443061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6398875 + ... + 6399256.

It is an arithmetic number, because the mean of its divisors is an integer number (614310336).

Almost surely, 2^2444443021 is an apocalyptic number.

It is an amenable number.

2444443021 is a deficient number, since it is larger than the sum of its proper divisors (12798323).

2444443021 is a wasteful number, since it uses less digits than its factorization.

2444443021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12798322.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 2444443021 is about 49441.3088520116. The cubic root of 2444443021 is about 1347.0797453976.

Adding to 2444443021 its reverse (1203444442), we get a palindrome (3647887463).

The spelling of 2444443021 in words is "two billion, four hundred forty-four million, four hundred forty-three thousand, twenty-one".