450653689 has 2 divisors, whose sum is σ = 450653690. Its totient is φ = 450653688.

The previous prime is 450653681. The next prime is 450653701. The reversal of 450653689 is 986356054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288728064 + 161925625 = 16992^2 + 12725^2 .

It is a cyclic number.

It is not a de Polignac number, because 450653689 - 2³ = 450653681 is a prime.

It is not a weakly prime, because it can be changed into another prime (450653681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225326844 + 225326845.

It is an arithmetic number, because the mean of its divisors is an integer number (225326845).

Almost surely, 2^450653689 is an apocalyptic number.

It is an amenable number.

450653689 is a deficient number, since it is larger than the sum of its proper divisors (1).

450653689 is an equidigital number, since it uses as much as digits as its factorization.

450653689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 450653689 is about 21228.6054417147. The cubic root of 450653689 is about 766.6803106793.

The spelling of 450653689 in words is "four hundred fifty million, six hundred fifty-three thousand, six hundred eighty-nine".