13984393 has 4 divisors (see below), whose sum is σ = 14128660. Its totient is φ = 13840128.

The previous prime is 13984363. The next prime is 13984429. The reversal of 13984393 is 39348931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39348931 = 17 ⋅2314643.

It can be written as a sum of positive squares in 2 ways, for example, as 3948169 + 10036224 = 1987^2 + 3168^2 .

It is a cyclic number.

It is not a de Polignac number, because 13984393 - 2¹³ = 13976201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13984363) 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 3 ways as a sum of consecutive naturals, for example, 71988 + ... + 72181.

It is an arithmetic number, because the mean of its divisors is an integer number (3532165).

Almost surely, 2^13984393 is an apocalyptic number.

It is an amenable number.

13984393 is a deficient number, since it is larger than the sum of its proper divisors (144267).

13984393 is an equidigital number, since it uses as much as digits as its factorization.

13984393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144266.

The product of its digits is 69984, while the sum is 40.

The square root of 13984393 is about 3739.5712321067. The cubic root of 13984393 is about 240.9246333781.

The spelling of 13984393 in words is "thirteen million, nine hundred eighty-four thousand, three hundred ninety-three".