450403400 has 24 divisors (see below), whose sum is σ = 1047188370. Its totient is φ = 180161280.

The previous prime is 450403391. The next prime is 450403439. The reversal of 450403400 is 4304054.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 404894884 + 45508516 = 20122^2 + 6746^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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 5 ways as a sum of consecutive naturals, for example, 1125809 + ... + 1126208.

Almost surely, 2^450403400 is an apocalyptic number.

450403400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450403400 is an abundant number, since it is smaller than the sum of its proper divisors (596784970).

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

450403400 is a wasteful number, since it uses less digits than its factorization.

450403400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252033 (or 2252024 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 450403400 is about 21222.7095348356. The cubic root of 450403400 is about 766.5383486147.

Adding to 450403400 its reverse (4304054), we get a palindrome (454707454).

The spelling of 450403400 in words is "four hundred fifty million, four hundred three thousand, four hundred".