500489747209 has 9 divisors (see below), whose sum is σ = 508119357837. Its totient is φ = 492973059084.

The previous prime is 500489747129. The next prime is 500489747231. The reversal of 500489747209 is 902747984005.

The square root of 500489747209 is 707453.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 500489747209 - 2²¹ = 500487650057 is a prime.

It is a super-2 number, since 2×500489747209² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 500489747209.

It is not an unprimeable number, because it can be changed into a prime (500489741209) 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 8 ways as a sum of consecutive naturals, for example, 47394072 + ... + 47404630.

Almost surely, 2^500489747209 is an apocalyptic number.

500489747209 is the 707453-rd square number.

500489747209 is the 353727-th centered octagonal number.

It is an amenable number.

500489747209 is a deficient number, since it is larger than the sum of its proper divisors (7629610628).

500489747209 is an frugal number, since it uses more digits than its factorization.

500489747209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21252 (or 10626 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 500489747209 in words is "five hundred billion, four hundred eighty-nine million, seven hundred forty-seven thousand, two hundred nine".