450400203 has 16 divisors (see below), whose sum is σ = 727920000. Its totient is φ = 272969640.

The previous prime is 450400199. The next prime is 450400213. The reversal of 450400203 is 302004054.

It is a happy number.

It is not a de Polignac number, because 450400203 - 2² = 450400199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (450400213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757953 + ... + 758546.

It is an arithmetic number, because the mean of its divisors is an integer number (45495000).

Almost surely, 2^450400203 is an apocalyptic number.

450400203 is a deficient number, since it is larger than the sum of its proper divisors (277519797).

450400203 is a wasteful number, since it uses less digits than its factorization.

450400203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516519 (or 1516513 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 450400203 is about 21222.6342144419. The cubic root of 450400203 is about 766.5365349599.

Adding to 450400203 its reverse (302004054), we get a palindrome (752404257).

The spelling of 450400203 in words is "four hundred fifty million, four hundred thousand, two hundred three".