500444491 has 4 divisors (see below), whose sum is σ = 500720832. Its totient is φ = 500168152.

The previous prime is 500444489. The next prime is 500444509. The reversal of 500444491 is 194444005.

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

It is a cyclic number.

It is not a de Polignac number, because 500444491 - 2¹ = 500444489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500444471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135436 + ... + 139081.

It is an arithmetic number, because the mean of its divisors is an integer number (125180208).

Almost surely, 2^500444491 is an apocalyptic number.

500444491 is a deficient number, since it is larger than the sum of its proper divisors (276341).

500444491 is a wasteful number, since it uses less digits than its factorization.

500444491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276340.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 500444491 is about 22370.6166879682. The cubic root of 500444491 is about 793.9356514841.

Adding to 500444491 its reverse (194444005), we get a palindrome (694888496).

The spelling of 500444491 in words is "five hundred million, four hundred forty-four thousand, four hundred ninety-one".