502449940 has 24 divisors (see below), whose sum is σ = 1091530440. Its totient is φ = 194049408.

The previous prime is 502449917. The next prime is 502449947. The reversal of 502449940 is 49944205.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 83101456 + 419348484 = 9116^2 + 20478^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 502449940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (502449947) 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, 432567 + ... + 433726.

It is an arithmetic number, because the mean of its divisors is an integer number (45480435).

Almost surely, 2^502449940 is an apocalyptic number.

It is an amenable number.

502449940 is an abundant number, since it is smaller than the sum of its proper divisors (589080500).

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

502449940 is a wasteful number, since it uses less digits than its factorization.

502449940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866331 (or 866329 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 502449940 is about 22415.3951560083. The cubic root of 502449940 is about 794.9947601938.

The spelling of 502449940 in words is "five hundred two million, four hundred forty-nine thousand, nine hundred forty".