13384821 has 8 divisors (see below), whose sum is σ = 17925280. Its totient is φ = 8883792.

The previous prime is 13384807. The next prime is 13384841. The reversal of 13384821 is 12848331.

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

It is not a de Polignac number, because 13384821 - 2⁶ = 13384757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13384841) 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, 9055 + ... + 10428.

It is an arithmetic number, because the mean of its divisors is an integer number (2240660).

Almost surely, 2^13384821 is an apocalyptic number.

It is an amenable number.

13384821 is a deficient number, since it is larger than the sum of its proper divisors (4540459).

13384821 is a wasteful number, since it uses less digits than its factorization.

13384821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19715.

The product of its digits is 4608, while the sum is 30.

The square root of 13384821 is about 3658.5271626708. The cubic root of 13384821 is about 237.4310551492.

The spelling of 13384821 in words is "thirteen million, three hundred eighty-four thousand, eight hundred twenty-one".