500004 has 72 divisors (see below), whose sum is σ = 1441440. Its totient is φ = 145152.

The previous prime is 499979. The next prime is 500009. The reversal of 500004 is 400005.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (500009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11607 + ... + 11649.

It is an arithmetic number, because the mean of its divisors is an integer number (20020).

2⁵⁰⁰⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 500004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720720).

500004 is an abundant number, since it is smaller than the sum of its proper divisors (941436).

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

500004 is a wasteful number, since it uses less digits than its factorization.

500004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 9.

The square root of 500004 is about 707.1096096080. The cubic root of 500004 is about 79.3702642513.

Adding to 500004 its reverse (400005), we get a palindrome (900009).

Subtracting from 500004 its reverse (400005), we obtain a palindrome (99999).

The spelling of 500004 in words is "five hundred thousand, four".