450442623 has 4 divisors (see below), whose sum is σ = 600590168. Its totient is φ = 300295080.

The previous prime is 450442621. The next prime is 450442721. The reversal of 450442623 is 326244054.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 450442623 - 2¹ = 450442621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450442621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75073768 + ... + 75073773.

It is an arithmetic number, because the mean of its divisors is an integer number (150147542).

Almost surely, 2^450442623 is an apocalyptic number.

450442623 is a deficient number, since it is larger than the sum of its proper divisors (150147545).

450442623 is a wasteful number, since it uses less digits than its factorization.

450442623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150147544.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 450442623 is about 21223.6335955934. The cubic root of 450442623 is about 766.5605990839.

Adding to 450442623 its reverse (326244054), we get a palindrome (776686677).

The spelling of 450442623 in words is "four hundred fifty million, four hundred forty-two thousand, six hundred twenty-three".