4440001 has 2 divisors, whose sum is σ = 4440002. Its totient is φ = 4440000.

The previous prime is 4439993. The next prime is 4440011. The reversal of 4440001 is 1000444.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3326976 + 1113025 = 1824^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440001 - 2³ = 4439993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4440011) 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, 2220000 + 2220001.

It is an arithmetic number, because the mean of its divisors is an integer number (2220001).

Almost surely, 2^4440001 is an apocalyptic number.

It is an amenable number.

4440001 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440001 is an equidigital number, since it uses as much as digits as its factorization.

4440001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 4440001 is about 2107.1309878600. The cubic root of 4440001 is about 164.3593276368.

Adding to 4440001 its reverse (1000444), we get a palindrome (5440445).

The spelling of 4440001 in words is "four million, four hundred forty thousand, one".