450500004 has 18 divisors (see below), whose sum is σ = 1138763990. Its totient is φ = 150166656.

The previous prime is 450499999. The next prime is 450500023. The reversal of 450500004 is 400005054.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 260887104 + 189612900 = 16152^2 + 13770^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 450500004.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6256909 + ... + 6256980.

Almost surely, 2^450500004 is an apocalyptic number.

It is an amenable number.

450500004 is an abundant number, since it is smaller than the sum of its proper divisors (688263986).

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

450500004 is a wasteful number, since it uses less digits than its factorization.

450500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12513899 (or 12513894 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 450500004 is about 21224.9853710197. The cubic root of 450500004 is about 766.5931479177.

Adding to 450500004 its reverse (400005054), we get a palindrome (850505058).

The spelling of 450500004 in words is "four hundred fifty million, five hundred thousand, four".