500440 has 16 divisors (see below), whose sum is σ = 1126080. Its totient is φ = 200160.

The previous prime is 500431. The next prime is 500443. The reversal of 500440 is 44005.

It is a self number, because there is not a number n which added to its sum of digits gives 500440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500443) 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, 6216 + ... + 6295.

It is an arithmetic number, because the mean of its divisors is an integer number (70380).

2⁵⁰⁰⁴⁴⁰ is an apocalyptic number.

It is an amenable number.

500440 is an abundant number, since it is smaller than the sum of its proper divisors (625640).

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

500440 is a wasteful number, since it uses less digits than its factorization.

500440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12522 (or 12518 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 500440 is about 707.4178397524. The cubic root of 500440 is about 79.3933276545.

Adding to 500440 its reverse (44005), we get a palindrome (544445).

The spelling of 500440 in words is "five hundred thousand, four hundred forty".