13532409 has 12 divisors (see below), whose sum is σ = 21323952. Its totient is φ = 8201400.

The previous prime is 13532377. The next prime is 13532429. The reversal of 13532409 is 90423531.

It is not a de Polignac number, because 13532409 - 2⁵ = 13532377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13532429) 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, 68247 + ... + 68444.

It is an arithmetic number, because the mean of its divisors is an integer number (1776996).

Almost surely, 2^13532409 is an apocalyptic number.

It is an amenable number.

13532409 is a deficient number, since it is larger than the sum of its proper divisors (7791543).

13532409 is a wasteful number, since it uses less digits than its factorization.

13532409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136708 (or 136705 counting only the distinct ones).

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

The square root of 13532409 is about 3678.6422767103. The cubic root of 13532409 is about 238.3005465627.

The spelling of 13532409 in words is "thirteen million, five hundred thirty-two thousand, four hundred nine".