12247184889 has 27 divisors (see below), whose sum is σ = 18199673037. Its totient is φ = 7936151904.

The previous prime is 12247184881. The next prime is 12247184921. The reversal of 12247184889 is 98848174221.

The square root of 12247184889 is 110667.

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

12247184889 is a `hidden beast` number, since 12 + 2 + 471 + 84 + 8 + 89 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7011215289 + 5235969600 = 83733^2 + 72360^2 .

It is not a de Polignac number, because 12247184889 - 2³ = 12247184881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12247184881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12283539 + ... + 12284535.

Almost surely, 2^12247184889 is an apocalyptic number.

12247184889 is the 110667-th square number.

12247184889 is the 55334-th centered octagonal number.

It is an amenable number.

12247184889 is a deficient number, since it is larger than the sum of its proper divisors (5952488148).

12247184889 is an frugal number, since it uses more digits than its factorization.

12247184889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074 (or 1037 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 54.

It can be divided in two parts, 12247 and 184889, that added together give a square (197136 = 444²).

The spelling of 12247184889 in words is "twelve billion, two hundred forty-seven million, one hundred eighty-four thousand, eight hundred eighty-nine".