13120409 has 8 divisors (see below), whose sum is σ = 13747968. Its totient is φ = 12505680.

The previous prime is 13120351. The next prime is 13120411. The reversal of 13120409 is 90402131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13120409 - 2⁸ = 13120153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082 + ... + 5235.

It is an arithmetic number, because the mean of its divisors is an integer number (1718496).

Almost surely, 2^13120409 is an apocalyptic number.

It is an amenable number.

13120409 is a deficient number, since it is larger than the sum of its proper divisors (627559).

13120409 is an equidigital number, since it uses as much as digits as its factorization.

13120409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6415.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 13120409 is about 3622.2105129327. The cubic root of 13120409 is about 235.8571924013.

The spelling of 13120409 in words is "thirteen million, one hundred twenty thousand, four hundred nine".