503940440 has 32 divisors (see below), whose sum is σ = 1134972000. Its totient is φ = 201379584.

The previous prime is 503940431. The next prime is 503940443. The reversal of 503940440 is 44049305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503940443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39581 + ... + 50739.

It is an arithmetic number, because the mean of its divisors is an integer number (35467875).

Almost surely, 2^503940440 is an apocalyptic number.

It is an amenable number.

503940440 is an abundant number, since it is smaller than the sum of its proper divisors (631031560).

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

503940440 is a wasteful number, since it uses less digits than its factorization.

503940440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12299 (or 12295 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 503940440 is about 22448.6177748208. The cubic root of 503940440 is about 795.7800921106.

Adding to 503940440 its reverse (44049305), we get a palindrome (547989745).

The spelling of 503940440 in words is "five hundred three million, nine hundred forty thousand, four hundred forty".