13996321 has 8 divisors (see below), whose sum is σ = 14913504. Its totient is φ = 13089600.

The previous prime is 13996319. The next prime is 13996343. The reversal of 13996321 is 12369931.

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 13996321 - 2¹ = 13996319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13996391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246 + ... + 5296.

It is an arithmetic number, because the mean of its divisors is an integer number (1864188).

Almost surely, 2^13996321 is an apocalyptic number.

It is an amenable number.

13996321 is a deficient number, since it is larger than the sum of its proper divisors (917183).

13996321 is a wasteful number, since it uses less digits than its factorization.

13996321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231.

The product of its digits is 8748, while the sum is 34.

The square root of 13996321 is about 3741.1657274171. The cubic root of 13996321 is about 240.9931128694.

The spelling of 13996321 in words is "thirteen million, nine hundred ninety-six thousand, three hundred twenty-one".