447660973 has 2 divisors, whose sum is σ = 447660974. Its totient is φ = 447660972.

The previous prime is 447660943. The next prime is 447660977. The reversal of 447660973 is 379066744.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447660964 + 9 = 21158^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 447660973 - 2²¹ = 445563821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447660977) 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, 223830486 + 223830487.

It is an arithmetic number, because the mean of its divisors is an integer number (223830487).

Almost surely, 2^447660973 is an apocalyptic number.

It is an amenable number.

447660973 is a deficient number, since it is larger than the sum of its proper divisors (1).

447660973 is an equidigital number, since it uses as much as digits as its factorization.

447660973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 46.

The square root of 447660973 is about 21158.0002126855. Note that the first 3 decimals coincide. The cubic root of 447660973 is about 764.9794079353.

The spelling of 447660973 in words is "four hundred forty-seven million, six hundred sixty thousand, nine hundred seventy-three".