4243440001 has 2 divisors, whose sum is σ = 4243440002. Its totient is φ = 4243440000.

The previous prime is 4243439971. The next prime is 4243440007. The reversal of 4243440001 is 1000443424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3622234225 + 621205776 = 60185^2 + 24924^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243440001 - 2⁵ = 4243439969 is a prime.

It is not a weakly prime, because it can be changed into another prime (4243440007) 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 as a sum of consecutive naturals, namely, 2121720000 + 2121720001.

It is an arithmetic number, because the mean of its divisors is an integer number (2121720001).

Almost surely, 2^4243440001 is an apocalyptic number.

It is an amenable number.

4243440001 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243440001 is an equidigital number, since it uses as much as digits as its factorization.

4243440001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4243440001 is about 65141.6917265740. The cubic root of 4243440001 is about 1618.9720655859.

Adding to 4243440001 its reverse (1000443424), we get a palindrome (5243883425).

The spelling of 4243440001 in words is "four billion, two hundred forty-three million, four hundred forty thousand, one".