4445478449 has 2 divisors, whose sum is σ = 4445478450. Its totient is φ = 4445478448.

The previous prime is 4445478439. The next prime is 4445478451. The reversal of 4445478449 is 9448745444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3432202225 + 1013276224 = 58585^2 + 31832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4445478449 is a prime.

Together with 4445478451, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4445478449.

It is not a weakly prime, because it can be changed into another prime (4445478439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2222739224 + 2222739225.

It is an arithmetic number, because the mean of its divisors is an integer number (2222739225).

Almost surely, 2^4445478449 is an apocalyptic number.

It is an amenable number.

4445478449 is a deficient number, since it is larger than the sum of its proper divisors (1).

4445478449 is an equidigital number, since it uses as much as digits as its factorization.

4445478449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10321920, while the sum is 53.

The square root of 4445478449 is about 66674.4212498316. The cubic root of 4445478449 is about 1644.2688767263.

The spelling of 4445478449 in words is "four billion, four hundred forty-five million, four hundred seventy-eight thousand, four hundred forty-nine".