13889291 has 4 divisors (see below), whose sum is σ = 14957712. Its totient is φ = 12820872.

The previous prime is 13889279. The next prime is 13889321. The reversal of 13889291 is 19298831.

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 13889291 - 2¹⁸ = 13627147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13889261) 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, 534191 + ... + 534216.

It is an arithmetic number, because the mean of its divisors is an integer number (3739428).

Almost surely, 2^13889291 is an apocalyptic number.

13889291 is a deficient number, since it is larger than the sum of its proper divisors (1068421).

13889291 is a wasteful number, since it uses less digits than its factorization.

13889291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068420.

The product of its digits is 31104, while the sum is 41.

The square root of 13889291 is about 3726.8339109759. The cubic root of 13889291 is about 240.3772481405.

The spelling of 13889291 in words is "thirteen million, eight hundred eighty-nine thousand, two hundred ninety-one".