13913191 has 8 divisors (see below), whose sum is σ = 14824944. Its totient is φ = 13011840.

The previous prime is 13913161. The next prime is 13913197. The reversal of 13913191 is 19131931.

13913191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13913191 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 (13913197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261 + ... + 5281.

It is an arithmetic number, because the mean of its divisors is an integer number (1853118).

Almost surely, 2^13913191 is an apocalyptic number.

13913191 is a deficient number, since it is larger than the sum of its proper divisors (911753).

13913191 is a wasteful number, since it uses less digits than its factorization.

13913191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201.

The product of its digits is 729, while the sum is 28.

The square root of 13913191 is about 3730.0390078389. The cubic root of 13913191 is about 240.5150455301.

The spelling of 13913191 in words is "thirteen million, nine hundred thirteen thousand, one hundred ninety-one".