13927389 has 8 divisors (see below), whose sum is σ = 21222720. Its totient is φ = 7958496.

The previous prime is 13927387. The next prime is 13927391. The reversal of 13927389 is 98372931.

It is an interprime number because it is at equal distance from previous prime (13927387) and next prime (13927391).

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

It is not a de Polignac number, because 13927389 - 2¹ = 13927387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13927389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13927387) 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, 331584 + ... + 331625.

It is an arithmetic number, because the mean of its divisors is an integer number (2652840).

Almost surely, 2^13927389 is an apocalyptic number.

It is an amenable number.

13927389 is a deficient number, since it is larger than the sum of its proper divisors (7295331).

13927389 is an equidigital number, since it uses as much as digits as its factorization.

13927389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663219.

The product of its digits is 81648, while the sum is 42.

The square root of 13927389 is about 3731.9417198022. The cubic root of 13927389 is about 240.5968305473.

The spelling of 13927389 in words is "thirteen million, nine hundred twenty-seven thousand, three hundred eighty-nine".