447704393 has 2 divisors, whose sum is σ = 447704394. Its totient is φ = 447704392.

The previous prime is 447704381. The next prime is 447704419. The reversal of 447704393 is 393407744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447237904 + 466489 = 21148^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 447704393 - 2⁸ = 447704137 is a prime.

It is a super-2 number, since 2×447704393² = 400878447022996898, which contains 22 as substring.

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 447704393.

It is not a weakly prime, because it can be changed into another prime (447704893) 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, 223852196 + 223852197.

It is an arithmetic number, because the mean of its divisors is an integer number (223852197).

Almost surely, 2^447704393 is an apocalyptic number.

It is an amenable number.

447704393 is a deficient number, since it is larger than the sum of its proper divisors (1).

447704393 is an equidigital number, since it uses as much as digits as its factorization.

447704393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 447704393 is about 21159.0262772180. The cubic root of 447704393 is about 765.0041396959.

The spelling of 447704393 in words is "four hundred forty-seven million, seven hundred four thousand, three hundred ninety-three".