13949191 has 2 divisors, whose sum is σ = 13949192. Its totient is φ = 13949190.

The previous prime is 13949179. The next prime is 13949207. The reversal of 13949191 is 19194931.

13949191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13949191 - 2¹⁹ = 13424903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13949191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13949161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6974595 + 6974596.

It is an arithmetic number, because the mean of its divisors is an integer number (6974596).

Almost surely, 2^13949191 is an apocalyptic number.

13949191 is a deficient number, since it is larger than the sum of its proper divisors (1).

13949191 is an equidigital number, since it uses as much as digits as its factorization.

13949191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 37.

The square root of 13949191 is about 3734.8615770869. The cubic root of 13949191 is about 240.7223088973.

It can be divided in two parts, 1394 and 9191, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 13949191 in words is "thirteen million, nine hundred forty-nine thousand, one hundred ninety-one".