11989592009 has 2 divisors, whose sum is σ = 11989592010. Its totient is φ = 11989592008.

The previous prime is 11989591997. The next prime is 11989592033. The reversal of 11989592009 is 90029598911.

11989592009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9672132409 + 2317459600 = 98347^2 + 48140^2 .

It is a cyclic number.

It is not a de Polignac number, because 11989592009 - 2⁸ = 11989591753 is a prime.

It is not a weakly prime, because it can be changed into another prime (11989592309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5994796004 + 5994796005.

It is an arithmetic number, because the mean of its divisors is an integer number (5994796005).

Almost surely, 2^11989592009 is an apocalyptic number.

It is an amenable number.

11989592009 is a deficient number, since it is larger than the sum of its proper divisors (1).

11989592009 is an equidigital number, since it uses as much as digits as its factorization.

11989592009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 53.

The spelling of 11989592009 in words is "eleven billion, nine hundred eighty-nine million, five hundred ninety-two thousand, nine".