450169589 has 2 divisors, whose sum is σ = 450169590. Its totient is φ = 450169588.

The previous prime is 450169553. The next prime is 450169591. The reversal of 450169589 is 985961054.

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., 370870564 + 79299025 = 19258^2 + 8905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450169589 is a prime.

Together with 450169591, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450169519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225084794 + 225084795.

It is an arithmetic number, because the mean of its divisors is an integer number (225084795).

Almost surely, 2^450169589 is an apocalyptic number.

It is an amenable number.

450169589 is a deficient number, since it is larger than the sum of its proper divisors (1).

450169589 is an equidigital number, since it uses as much as digits as its factorization.

450169589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 450169589 is about 21217.2003101257. The cubic root of 450169589 is about 766.4056852293.

The spelling of 450169589 in words is "four hundred fifty million, one hundred sixty-nine thousand, five hundred eighty-nine".