4075444421 has 2 divisors, whose sum is σ = 4075444422. Its totient is φ = 4075444420.

The previous prime is 4075444393. The next prime is 4075444489. The reversal of 4075444421 is 1244445704.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3064840321 + 1010604100 = 55361^2 + 31790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4075444421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4075444721) 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, 2037722210 + 2037722211.

It is an arithmetic number, because the mean of its divisors is an integer number (2037722211).

Almost surely, 2^4075444421 is an apocalyptic number.

It is an amenable number.

4075444421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4075444421 is an equidigital number, since it uses as much as digits as its factorization.

4075444421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71680, while the sum is 35.

The square root of 4075444421 is about 63839.2075530391. The cubic root of 4075444421 is about 1597.3190024846.

The spelling of 4075444421 in words is "four billion, seventy-five million, four hundred forty-four thousand, four hundred twenty-one".