13579609 has 2 divisors, whose sum is σ = 13579610. Its totient is φ = 13579608.

The previous prime is 13579603. The next prime is 13579639. The reversal of 13579609 is 90697531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13505625 + 73984 = 3675^2 + 272^2 .

It is an emirp because it is prime and its reverse (90697531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13579609 - 2¹³ = 13571417 is a prime.

It is a super-3 number, since 3×13579609³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (13579603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6789804 + 6789805.

It is an arithmetic number, because the mean of its divisors is an integer number (6789805).

Almost surely, 2^13579609 is an apocalyptic number.

It is an amenable number.

13579609 is a deficient number, since it is larger than the sum of its proper divisors (1).

13579609 is an equidigital number, since it uses as much as digits as its factorization.

13579609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 13579609 is about 3685.0521027524. The cubic root of 13579609 is about 238.5772830487.

The spelling of 13579609 in words is "thirteen million, five hundred seventy-nine thousand, six hundred nine".