13485409 has 4 divisors (see below), whose sum is σ = 15411904. Its totient is φ = 11558916.

The previous prime is 13485391. The next prime is 13485431. The reversal of 13485409 is 90458431.

13485409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90458431 = 7 ⋅12922633.

It is a cyclic number.

It is not a de Polignac number, because 13485409 - 2⁷ = 13485281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13485449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963237 + ... + 963250.

It is an arithmetic number, because the mean of its divisors is an integer number (3852976).

Almost surely, 2^13485409 is an apocalyptic number.

It is an amenable number.

13485409 is a deficient number, since it is larger than the sum of its proper divisors (1926495).

13485409 is an equidigital number, since it uses as much as digits as its factorization.

13485409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1926494.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 13485409 is about 3672.2484937705. The cubic root of 13485409 is about 238.0243425423.

The spelling of 13485409 in words is "thirteen million, four hundred eighty-five thousand, four hundred nine".