13485909 has 4 divisors (see below), whose sum is σ = 17981216. Its totient is φ = 8990604.

The previous prime is 13485907. The next prime is 13485917. The reversal of 13485909 is 90958431.

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.

It is not a de Polignac number, because 13485909 - 2¹ = 13485907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13485907) 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, 2247649 + ... + 2247654.

It is an arithmetic number, because the mean of its divisors is an integer number (4495304).

Almost surely, 2^13485909 is an apocalyptic number.

It is an amenable number.

13485909 is a deficient number, since it is larger than the sum of its proper divisors (4495307).

13485909 is an equidigital number, since it uses as much as digits as its factorization.

13485909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495306.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 13485909 is about 3672.3165713212. The cubic root of 13485909 is about 238.0272842576.

The spelling of 13485909 in words is "thirteen million, four hundred eighty-five thousand, nine hundred nine".