13913771 has 4 divisors (see below), whose sum is σ = 13948200. Its totient is φ = 13879344.

The previous prime is 13913759. The next prime is 13913773. The reversal of 13913771 is 17731931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13913771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13913773) 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 3 ways as a sum of consecutive naturals, for example, 16601 + ... + 17418.

It is an arithmetic number, because the mean of its divisors is an integer number (3487050).

Almost surely, 2^13913771 is an apocalyptic number.

13913771 is a deficient number, since it is larger than the sum of its proper divisors (34429).

13913771 is an equidigital number, since it uses as much as digits as its factorization.

13913771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34428.

The product of its digits is 3969, while the sum is 32.

The square root of 13913771 is about 3730.1167542049. The cubic root of 13913771 is about 240.5183876052.

The spelling of 13913771 in words is "thirteen million, nine hundred thirteen thousand, seven hundred seventy-one".