13889347 has 4 divisors (see below), whose sum is σ = 14368320. Its totient is φ = 13410376.

The previous prime is 13889327. The next prime is 13889353. The reversal of 13889347 is 74398831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13889347 - 2⁷ = 13889219 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13889327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239443 + ... + 239500.

It is an arithmetic number, because the mean of its divisors is an integer number (3592080).

Almost surely, 2^13889347 is an apocalyptic number.

13889347 is a deficient number, since it is larger than the sum of its proper divisors (478973).

13889347 is an equidigital number, since it uses as much as digits as its factorization.

13889347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478972.

The product of its digits is 145152, while the sum is 43.

The square root of 13889347 is about 3726.8414240480. The cubic root of 13889347 is about 240.3775711977.

The spelling of 13889347 in words is "thirteen million, eight hundred eighty-nine thousand, three hundred forty-seven".