450494489 has 4 divisors (see below), whose sum is σ = 450537780. Its totient is φ = 450451200.

The previous prime is 450494477. The next prime is 450494519. The reversal of 450494489 is 984494054.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 363855625 + 86638864 = 19075^2 + 9308^2 .

It is a cyclic number.

It is not a de Polignac number, because 450494489 - 2¹² = 450490393 is a prime.

It is a super-2 number, since 2×450494489² = 405890569238742242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450494189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4457 + ... + 30345.

It is an arithmetic number, because the mean of its divisors is an integer number (112634445).

Almost surely, 2^450494489 is an apocalyptic number.

It is an amenable number.

450494489 is a deficient number, since it is larger than the sum of its proper divisors (43291).

450494489 is a wasteful number, since it uses less digits than its factorization.

450494489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43290.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 450494489 is about 21224.8554529825. The cubic root of 450494489 is about 766.5900197057.

The spelling of 450494489 in words is "four hundred fifty million, four hundred ninety-four thousand, four hundred eighty-nine".