489466947169 has 4 divisors (see below), whose sum is σ = 489485451780. Its totient is φ = 489448442560.

The previous prime is 489466947163. The next prime is 489466947173. The reversal of 489466947169 is 961749664984.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85813843600 + 403653103569 = 292940^2 + 635337^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489466947169 is a prime.

It is a super-2 number, since 2×489466947169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (489466947163) 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 3 ways as a sum of consecutive naturals, for example, 9212572 + ... + 9265549.

It is an arithmetic number, because the mean of its divisors is an integer number (122371362945).

Almost surely, 2^489466947169 is an apocalyptic number.

It is an amenable number.

489466947169 is a deficient number, since it is larger than the sum of its proper divisors (18504611).

489466947169 is a wasteful number, since it uses less digits than its factorization.

489466947169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18504610.

The product of its digits is 564350976, while the sum is 73.

The spelling of 489466947169 in words is "four hundred eighty-nine billion, four hundred sixty-six million, nine hundred forty-seven thousand, one hundred sixty-nine".