478844447 has 2 divisors, whose sum is σ = 478844448. Its totient is φ = 478844446.

The previous prime is 478844437. The next prime is 478844467. The reversal of 478844447 is 744448874.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478844447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478844395 and 478844404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478844437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239422223 + 239422224.

It is an arithmetic number, because the mean of its divisors is an integer number (239422224).

Almost surely, 2^478844447 is an apocalyptic number.

478844447 is a deficient number, since it is larger than the sum of its proper divisors (1).

478844447 is an equidigital number, since it uses as much as digits as its factorization.

478844447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3211264, while the sum is 50.

The square root of 478844447 is about 21882.5146406897. The cubic root of 478844447 is about 782.3447126585.

The spelling of 478844447 in words is "four hundred seventy-eight million, eight hundred forty-four thousand, four hundred forty-seven".