13362409 has 2 divisors, whose sum is σ = 13362410. Its totient is φ = 13362408.

The previous prime is 13362407. The next prime is 13362421. The reversal of 13362409 is 90426331.

13362409 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., 11323225 + 2039184 = 3365^2 + 1428^2 .

It is a cyclic number.

It is not a de Polignac number, because 13362409 - 2¹ = 13362407 is a prime.

Together with 13362407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13362407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6681204 + 6681205.

It is an arithmetic number, because the mean of its divisors is an integer number (6681205).

Almost surely, 2^13362409 is an apocalyptic number.

It is an amenable number.

13362409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13362409 is an equidigital number, since it uses as much as digits as its factorization.

13362409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 13362409 is about 3655.4628981840. The cubic root of 13362409 is about 237.2984602337.

The spelling of 13362409 in words is "thirteen million, three hundred sixty-two thousand, four hundred nine".