447081689 has 2 divisors, whose sum is σ = 447081690. Its totient is φ = 447081688.

The previous prime is 447081683. The next prime is 447081743. The reversal of 447081689 is 986180744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406224025 + 40857664 = 20155^2 + 6392^2 .

It is a cyclic number.

It is not a de Polignac number, because 447081689 - 2⁴ = 447081673 is a prime.

It is not a weakly prime, because it can be changed into another prime (447081683) 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, 223540844 + 223540845.

It is an arithmetic number, because the mean of its divisors is an integer number (223540845).

Almost surely, 2^447081689 is an apocalyptic number.

It is an amenable number.

447081689 is a deficient number, since it is larger than the sum of its proper divisors (1).

447081689 is an equidigital number, since it uses as much as digits as its factorization.

447081689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 447081689 is about 21144.3063021703. The cubic root of 447081689 is about 764.6492982911.

The spelling of 447081689 in words is "four hundred forty-seven million, eighty-one thousand, six hundred eighty-nine".