450440 has 16 divisors (see below), whose sum is σ = 1013580. Its totient is φ = 180160.

The previous prime is 450431. The next prime is 450451. The reversal of 450440 is 44054.

It can be written as a sum of positive squares in 2 ways, for example, as 417316 + 33124 = 646^2 + 182^2 .

It is an unprimeable number.

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, 5591 + ... + 5670.

2⁴⁵⁰⁴⁴⁰ is an apocalyptic number.

450440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450440 is an abundant number, since it is smaller than the sum of its proper divisors (563140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450440 is a wasteful number, since it uses less digits than its factorization.

450440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11272 (or 11268 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 450440 is about 671.1482697586. The cubic root of 450440 is about 76.6559111146.

Adding to 450440 its reverse (44054), we get a palindrome (494494).

The spelling of 450440 in words is "four hundred fifty thousand, four hundred forty".