447878201 has 2 divisors, whose sum is σ = 447878202. Its totient is φ = 447878200.

The previous prime is 447878161. The next prime is 447878213. The reversal of 447878201 is 102878744.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357247801 + 90630400 = 18901^2 + 9520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447878201 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (447878261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223939100 + 223939101.

It is an arithmetic number, because the mean of its divisors is an integer number (223939101).

Almost surely, 2^447878201 is an apocalyptic number.

It is an amenable number.

447878201 is a deficient number, since it is larger than the sum of its proper divisors (1).

447878201 is an equidigital number, since it uses as much as digits as its factorization.

447878201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 447878201 is about 21163.1330620019. The cubic root of 447878201 is about 765.1031236378.

The spelling of 447878201 in words is "four hundred forty-seven million, eight hundred seventy-eight thousand, two hundred one".