4440003121 has 2 divisors, whose sum is σ = 4440003122. Its totient is φ = 4440003120.

The previous prime is 4440003103. The next prime is 4440003133. The reversal of 4440003121 is 1213000444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4277160000 + 162843121 = 65400^2 + 12761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4440003121 is a prime.

It is not a weakly prime, because it can be changed into another prime (4440003521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220001560 + 2220001561.

It is an arithmetic number, because the mean of its divisors is an integer number (2220001561).

Almost surely, 2^4440003121 is an apocalyptic number.

It is an amenable number.

4440003121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440003121 is an equidigital number, since it uses as much as digits as its factorization.

4440003121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4440003121 is about 66633.3484150391. The cubic root of 4440003121 is about 1643.5935380845.

Adding to 4440003121 its reverse (1213000444), we get a palindrome (5653003565).

The spelling of 4440003121 in words is "four billion, four hundred forty million, three thousand, one hundred twenty-one".