13235409 has 12 divisors (see below), whose sum is σ = 20855952. Its totient is φ = 8021400.

The previous prime is 13235399. The next prime is 13235447. The reversal of 13235409 is 90453231.

It is not a de Polignac number, because 13235409 - 2¹² = 13231313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13235449) 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 in 11 ways as a sum of consecutive naturals, for example, 66747 + ... + 66944.

It is an arithmetic number, because the mean of its divisors is an integer number (1737996).

Almost surely, 2^13235409 is an apocalyptic number.

It is an amenable number.

13235409 is a deficient number, since it is larger than the sum of its proper divisors (7620543).

13235409 is a wasteful number, since it uses less digits than its factorization.

13235409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133708 (or 133705 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 13235409 is about 3638.0501645799. The cubic root of 13235409 is about 236.5442826432.

The spelling of 13235409 in words is "thirteen million, two hundred thirty-five thousand, four hundred nine".