450656489 has 2 divisors, whose sum is σ = 450656490. Its totient is φ = 450656488.

The previous prime is 450656443. The next prime is 450656513. The reversal of 450656489 is 984656054.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444872464 + 5784025 = 21092^2 + 2405^2 .

It is a cyclic number.

It is not a de Polignac number, because 450656489 - 2⁸ = 450656233 is a prime.

It is not a weakly prime, because it can be changed into another prime (450656419) 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, 225328244 + 225328245.

It is an arithmetic number, because the mean of its divisors is an integer number (225328245).

Almost surely, 2^450656489 is an apocalyptic number.

It is an amenable number.

450656489 is a deficient number, since it is larger than the sum of its proper divisors (1).

450656489 is an equidigital number, since it uses as much as digits as its factorization.

450656489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 450656489 is about 21228.6713903626. The cubic root of 450656489 is about 766.6818985212.

The spelling of 450656489 in words is "four hundred fifty million, six hundred fifty-six thousand, four hundred eighty-nine".