4445444441 has 2 divisors, whose sum is σ = 4445444442. Its totient is φ = 4445444440.

The previous prime is 4445444429. The next prime is 4445444453. The reversal of 4445444441 is 1444445444.

It is a balanced prime because it is at equal distance from previous prime (4445444429) and next prime (4445444453).

It can be written as a sum of positive squares in only one way, i.e., 3003040000 + 1442404441 = 54800^2 + 37979^2 .

It is a cyclic number.

It is not a de Polignac number, because 4445444441 - 2³⁰ = 3371702617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4445444395 and 4445444404.

It is not a weakly prime, because it can be changed into another prime (4445444141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222722220 + 2222722221.

It is an arithmetic number, because the mean of its divisors is an integer number (2222722221).

Almost surely, 2^4445444441 is an apocalyptic number.

It is an amenable number.

4445444441 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445444441 is an equidigital number, since it uses as much as digits as its factorization.

4445444441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 327680, while the sum is 38.

The square root of 4445444441 is about 66674.1662190087. The cubic root of 4445444441 is about 1644.2646838189.

Adding to 4445444441 its reverse (1444445444), we get a palindrome (5889889885).

The spelling of 4445444441 in words is "four billion, four hundred forty-five million, four hundred forty-four thousand, four hundred forty-one".