450531440 has 40 divisors (see below), whose sum is σ = 1052142480. Its totient is φ = 179411456.

The previous prime is 450531437. The next prime is 450531451. The reversal of 450531440 is 44135054.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5756 + ... + 30564.

It is an arithmetic number, because the mean of its divisors is an integer number (26303562).

Almost surely, 2^450531440 is an apocalyptic number.

450531440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450531440 is an abundant number, since it is smaller than the sum of its proper divisors (601611040).

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

450531440 is a wasteful number, since it uses less digits than its factorization.

450531440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25049 (or 25043 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 450531440 is about 21225.7259004256. The cubic root of 450531440 is about 766.6109785218.

Adding to 450531440 its reverse (44135054), we get a palindrome (494666494).

The spelling of 450531440 in words is "four hundred fifty million, five hundred thirty-one thousand, four hundred forty".