13522389 has 4 divisors (see below), whose sum is σ = 18029856. Its totient is φ = 9014924.

The previous prime is 13522373. The next prime is 13522391. The reversal of 13522389 is 98322531.

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 not a de Polignac number, because 13522389 - 2⁴ = 13522373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13522349) 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, 2253729 + ... + 2253734.

It is an arithmetic number, because the mean of its divisors is an integer number (4507464).

Almost surely, 2^13522389 is an apocalyptic number.

It is an amenable number.

13522389 is a deficient number, since it is larger than the sum of its proper divisors (4507467).

13522389 is an equidigital number, since it uses as much as digits as its factorization.

13522389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4507466.

The product of its digits is 12960, while the sum is 33.

The square root of 13522389 is about 3677.2801089936. The cubic root of 13522389 is about 238.2417159175.

It can be divided in two parts, 1352 and 2389, that added together give a triangular number (3741 = T₈₆).

The spelling of 13522389 in words is "thirteen million, five hundred twenty-two thousand, three hundred eighty-nine".