4440004421 has 2 divisors, whose sum is σ = 4440004422. Its totient is φ = 4440004420.

The previous prime is 4440004409. The next prime is 4440004423. The reversal of 4440004421 is 1244000444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2264808100 + 2175196321 = 47590^2 + 46639^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440004421 - 2¹⁴ = 4439988037 is a prime.

Together with 4440004423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4440004423) 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 as a sum of consecutive naturals, namely, 2220002210 + 2220002211.

It is an arithmetic number, because the mean of its divisors is an integer number (2220002211).

Almost surely, 2^4440004421 is an apocalyptic number.

It is an amenable number.

4440004421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440004421 is an equidigital number, since it uses as much as digits as its factorization.

4440004421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 4440004421 is about 66633.3581699137. The cubic root of 4440004421 is about 1643.5936984952.

Adding to 4440004421 its reverse (1244000444), we get a palindrome (5684004865).

The spelling of 4440004421 in words is "four billion, four hundred forty million, four thousand, four hundred twenty-one".