13579409 has 2 divisors, whose sum is σ = 13579410. Its totient is φ = 13579408.

The previous prime is 13579403. The next prime is 13579411. The reversal of 13579409 is 90497531.

It is a happy number.

13579409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 1329409 = 3500^2 + 1153^2 .

It is an emirp because it is prime and its reverse (90497531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13579409 - 2¹⁶ = 13513873 is a prime.

Together with 13579411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13579403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6789704 + 6789705.

It is an arithmetic number, because the mean of its divisors is an integer number (6789705).

Almost surely, 2^13579409 is an apocalyptic number.

It is an amenable number.

13579409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13579409 is an equidigital number, since it uses as much as digits as its factorization.

13579409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 13579409 is about 3685.0249659941. The cubic root of 13579409 is about 238.5761117904.

The spelling of 13579409 in words is "thirteen million, five hundred seventy-nine thousand, four hundred nine".