2444004421 has 4 divisors (see below), whose sum is σ = 2444353344. Its totient is φ = 2443655500.

The previous prime is 2444004413. The next prime is 2444004461. The reversal of 2444004421 is 1244004442.

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 2444004421 - 2³ = 2444004413 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 (2444004461) 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, 163735 + ... + 178036.

It is an arithmetic number, because the mean of its divisors is an integer number (611088336).

Almost surely, 2^2444004421 is an apocalyptic number.

It is an amenable number.

2444004421 is a deficient number, since it is larger than the sum of its proper divisors (348923).

2444004421 is an equidigital number, since it uses as much as digits as its factorization.

2444004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348922.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 2444004421 is about 49436.8730908418. The cubic root of 2444004421 is about 1346.9991729166. Note that the first 3 decimals are identical.

Adding to 2444004421 its reverse (1244004442), we get a palindrome (3688008863).

The spelling of 2444004421 in words is "two billion, four hundred forty-four million, four thousand, four hundred twenty-one".