13991341 has 12 divisors (see below), whose sum is σ = 17316192. Its totient is φ = 11069136.

The previous prime is 13991333. The next prime is 13991347. The reversal of 13991341 is 14319931.

It is not a de Polignac number, because 13991341 - 2³ = 13991333 is a prime.

It is the 3741-st Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13991347) by changing a digit.

It is a nontrivial repunit in base 3740.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4731 + ... + 7096.

It is an arithmetic number, because the mean of its divisors is an integer number (1443016).

Almost surely, 2^13991341 is an apocalyptic number.

13991341 is the 2366-th heptagonal number.

It is an amenable number.

13991341 is a deficient number, since it is larger than the sum of its proper divisors (3324851).

13991341 is a wasteful number, since it uses less digits than its factorization.

13991341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11860 (or 11847 counting only the distinct ones).

The product of its digits is 2916, while the sum is 31.

The square root of 13991341 is about 3740.5001002540. The cubic root of 13991341 is about 240.9645270701.

The spelling of 13991341 in words is "thirteen million, nine hundred ninety-one thousand, three hundred forty-one".