12169840489 has 9 divisors (see below), whose sum is σ = 12296567101. Its totient is φ = 12044410060.

The previous prime is 12169840483. The next prime is 12169840511. The reversal of 12169840489 is 98404896121.

The square root of 12169840489 is 110317.

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

It is not a de Polignac number, because 12169840489 - 2⁹ = 12169839977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12169840483) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11803404 + ... + 11804434.

Almost surely, 2^12169840489 is an apocalyptic number.

12169840489 is the 110317-th square number.

12169840489 is the 55159-th centered octagonal number.

It is an amenable number.

12169840489 is a deficient number, since it is larger than the sum of its proper divisors (126726612).

12169840489 is an frugal number, since it uses more digits than its factorization.

12169840489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2276 (or 1138 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 12169840489 in words is "twelve billion, one hundred sixty-nine million, eight hundred forty thousand, four hundred eighty-nine".