13436409 has 32 divisors (see below), whose sum is σ = 22070016. Its totient is φ = 7096320.

The previous prime is 13436389. The next prime is 13436413. The reversal of 13436409 is 90463431.

It is not a de Polignac number, because 13436409 - 2⁵ = 13436377 is a prime.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (13436459) 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 31 ways as a sum of consecutive naturals, for example, 21469 + ... + 22085.

It is an arithmetic number, because the mean of its divisors is an integer number (689688).

Almost surely, 2^13436409 is an apocalyptic number.

It is an amenable number.

13436409 is a deficient number, since it is larger than the sum of its proper divisors (8633607).

13436409 is a wasteful number, since it uses less digits than its factorization.

13436409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 13436409 is about 3665.5707604683. The cubic root of 13436409 is about 237.7357010024.

The spelling of 13436409 in words is "thirteen million, four hundred thirty-six thousand, four hundred nine".