500004990 has 24 divisors (see below), whose sum is σ = 1300013208. Its totient is φ = 133334640.

The previous prime is 500004977. The next prime is 500004991. The reversal of 500004990 is 99400005.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500004991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2777716 + ... + 2777895.

It is an arithmetic number, because the mean of its divisors is an integer number (54167217).

Almost surely, 2^500004990 is an apocalyptic number.

500004990 is an abundant number, since it is smaller than the sum of its proper divisors (800008218).

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

500004990 is a wasteful number, since it uses less digits than its factorization.

500004990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555624 (or 5555621 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 500004990 is about 22360.7913545116. The cubic root of 500004990 is about 793.7031663524.

Adding to 500004990 its reverse (99400005), we get a palindrome (599404995).

The spelling of 500004990 in words is "five hundred million, four thousand, nine hundred ninety".