4445665447 has 2 divisors, whose sum is σ = 4445665448. Its totient is φ = 4445665446.

The previous prime is 4445665379. The next prime is 4445665451. The reversal of 4445665447 is 7445665444.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4445665447 - 2¹⁹ = 4445141159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4445665447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4445662447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222832723 + 2222832724.

It is an arithmetic number, because the mean of its divisors is an integer number (2222832724).

Almost surely, 2^4445665447 is an apocalyptic number.

4445665447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445665447 is an equidigital number, since it uses as much as digits as its factorization.

4445665447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6451200, while the sum is 49.

The square root of 4445665447 is about 66675.8235569685. The cubic root of 4445665447 is about 1644.2919316636.

The spelling of 4445665447 in words is "four billion, four hundred forty-five million, six hundred sixty-five thousand, four hundred forty-seven".