4443121 has 2 divisors, whose sum is σ = 4443122. Its totient is φ = 4443120.

The previous prime is 4443107. The next prime is 4443139. The reversal of 4443121 is 1213444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3744225 + 698896 = 1935^2 + 836^2 .

It is a cyclic number.

It is not a de Polignac number, because 4443121 - 2⁷ = 4442993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4443181) 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, 2221560 + 2221561.

It is an arithmetic number, because the mean of its divisors is an integer number (2221561).

Almost surely, 2^4443121 is an apocalyptic number.

It is an amenable number.

4443121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4443121 is an equidigital number, since it uses as much as digits as its factorization.

4443121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4443121 is about 2107.8712009988. The cubic root of 4443121 is about 164.3978171952.

Adding to 4443121 its reverse (1213444), we get a palindrome (5656565).

The spelling of 4443121 in words is "four million, four hundred forty-three thousand, one hundred twenty-one".