13289221 has 8 divisors (see below), whose sum is σ = 14997600. Its totient is φ = 11664240.

The previous prime is 13289209. The next prime is 13289231. The reversal of 13289221 is 12298231.

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 13289221 - 2¹¹ = 13287173 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13289221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13289231) 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 7 ways as a sum of consecutive naturals, for example, 20511 + ... + 21148.

It is an arithmetic number, because the mean of its divisors is an integer number (1874700).

Almost surely, 2^13289221 is an apocalyptic number.

13289221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13289221 is a deficient number, since it is larger than the sum of its proper divisors (1708379).

13289221 is a wasteful number, since it uses less digits than its factorization.

13289221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41699.

The product of its digits is 1728, while the sum is 28.

The square root of 13289221 is about 3645.4383824171. The cubic root of 13289221 is about 236.8644266067.

The spelling of 13289221 in words is "thirteen million, two hundred eighty-nine thousand, two hundred twenty-one".