450489291 has 24 divisors (see below), whose sum is σ = 703849680. Its totient is φ = 255532032.

The previous prime is 450489289. The next prime is 450489301. The reversal of 450489291 is 192984054.

It is not a de Polignac number, because 450489291 - 2¹ = 450489289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450489211) 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 in 23 ways as a sum of consecutive naturals, for example, 8955 + ... + 31323.

It is an arithmetic number, because the mean of its divisors is an integer number (29327070).

Almost surely, 2^450489291 is an apocalyptic number.

450489291 is a deficient number, since it is larger than the sum of its proper divisors (253360389).

450489291 is a wasteful number, since it uses less digits than its factorization.

450489291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22523 (or 22516 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 450489291 is about 21224.7330018542. The cubic root of 450489291 is about 766.5870712788.

The spelling of 450489291 in words is "four hundred fifty million, four hundred eighty-nine thousand, two hundred ninety-one".