13481909 has 12 divisors (see below), whose sum is σ = 15742944. Its totient is φ = 11511864.

The previous prime is 13481899. The next prime is 13481921. The reversal of 13481909 is 90918431.

It is not a de Polignac number, because 13481909 - 2¹² = 13477813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13481929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24374 + ... + 24920.

It is an arithmetic number, because the mean of its divisors is an integer number (1311912).

Almost surely, 2^13481909 is an apocalyptic number.

It is an amenable number.

13481909 is a deficient number, since it is larger than the sum of its proper divisors (2261035).

13481909 is an equidigital number, since it uses as much as digits as its factorization.

13481909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1057 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 13481909 is about 3671.7719155743. The cubic root of 13481909 is about 238.0037484992.

The spelling of 13481909 in words is "thirteen million, four hundred eighty-one thousand, nine hundred nine".