13789391 has 8 divisors (see below), whose sum is σ = 17192064. Its totient is φ = 10744920.

The previous prime is 13789387. The next prime is 13789403. The reversal of 13789391 is 19398731.

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 13789391 - 2² = 13789387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13789361) 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, 89465 + ... + 89618.

It is an arithmetic number, because the mean of its divisors is an integer number (2149008).

Almost surely, 2^13789391 is an apocalyptic number.

13789391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13789391 is a deficient number, since it is larger than the sum of its proper divisors (3402673).

13789391 is a wasteful number, since it uses less digits than its factorization.

13789391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179101.

The product of its digits is 40824, while the sum is 41.

The square root of 13789391 is about 3713.4069262606. The cubic root of 13789391 is about 239.7995490627.

The spelling of 13789391 in words is "thirteen million, seven hundred eighty-nine thousand, three hundred ninety-one".