13523489 has 4 divisors (see below), whose sum is σ = 15455424. Its totient is φ = 11591556.

The previous prime is 13523479. The next prime is 13523513. The reversal of 13523489 is 98432531.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13523489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13523429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965957 + ... + 965970.

It is an arithmetic number, because the mean of its divisors is an integer number (3863856).

Almost surely, 2^13523489 is an apocalyptic number.

It is an amenable number.

13523489 is a deficient number, since it is larger than the sum of its proper divisors (1931935).

13523489 is an equidigital number, since it uses as much as digits as its factorization.

13523489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931934.

The product of its digits is 25920, while the sum is 35.

The square root of 13523489 is about 3677.4296730189. The cubic root of 13523489 is about 238.2481757914.

The spelling of 13523489 in words is "thirteen million, five hundred twenty-three thousand, four hundred eighty-nine".