13609808939 has 2 divisors, whose sum is σ = 13609808940. Its totient is φ = 13609808938.

The previous prime is 13609808921. The next prime is 13609808969. The reversal of 13609808939 is 93980890631.

13609808939 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 is an emirp because it is prime and its reverse (93980890631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13609808939 - 2²⁴ = 13593031723 is a prime.

It is a super-4 number, since 4×13609808939⁴ (a number of 42 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (13609808969) 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, 6804904469 + 6804904470.

It is an arithmetic number, because the mean of its divisors is an integer number (6804904470).

Almost surely, 2^13609808939 is an apocalyptic number.

13609808939 is a deficient number, since it is larger than the sum of its proper divisors (1).

13609808939 is an equidigital number, since it uses as much as digits as its factorization.

13609808939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 13609808939 in words is "thirteen billion, six hundred nine million, eight hundred eight thousand, nine hundred thirty-nine".