13489321 has 8 divisors (see below), whose sum is σ = 13998600. Its totient is φ = 12983040.

The previous prime is 13489319. The next prime is 13489327. The reversal of 13489321 is 12398431.

It can be written as a sum of positive squares in 4 ways, for example, as 608400 + 12880921 = 780^2 + 3589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13489321 - 2¹ = 13489319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13489327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12865 + ... + 13873.

It is an arithmetic number, because the mean of its divisors is an integer number (1749825).

Almost surely, 2^13489321 is an apocalyptic number.

It is an amenable number.

13489321 is a deficient number, since it is larger than the sum of its proper divisors (509279).

13489321 is a wasteful number, since it uses less digits than its factorization.

13489321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499.

The product of its digits is 5184, while the sum is 31.

The square root of 13489321 is about 3672.7810988405. The cubic root of 13489321 is about 238.0473565817.

The spelling of 13489321 in words is "thirteen million, four hundred eighty-nine thousand, three hundred twenty-one".