13879609 has 2 divisors, whose sum is σ = 13879610. Its totient is φ = 13879608.

The previous prime is 13879601. The next prime is 13879627. The reversal of 13879609 is 90697831.

13879609 is digitally balanced in base 3, 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., 13838400 + 41209 = 3720^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 13879609 - 2³ = 13879601 is a prime.

It is not a weakly prime, because it can be changed into another prime (13879601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939804 + 6939805.

It is an arithmetic number, because the mean of its divisors is an integer number (6939805).

Almost surely, 2^13879609 is an apocalyptic number.

It is an amenable number.

13879609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13879609 is an equidigital number, since it uses as much as digits as its factorization.

13879609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 13879609 is about 3725.5347267204. The cubic root of 13879609 is about 240.3213807938.

The spelling of 13879609 in words is "thirteen million, eight hundred seventy-nine thousand, six hundred nine".