13928911 has 4 divisors (see below), whose sum is σ = 14119792. Its totient is φ = 13738032.

The previous prime is 13928891. The next prime is 13928917. The reversal of 13928911 is 11982931.

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

It is a cyclic number.

It is not a de Polignac number, because 13928911 - 2⁹ = 13928399 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 (13928917) 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, 95331 + ... + 95476.

It is an arithmetic number, because the mean of its divisors is an integer number (3529948).

Almost surely, 2^13928911 is an apocalyptic number.

13928911 is a deficient number, since it is larger than the sum of its proper divisors (190881).

13928911 is an equidigital number, since it uses as much as digits as its factorization.

13928911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190880.

The product of its digits is 3888, while the sum is 34.

The square root of 13928911 is about 3732.1456295273. The cubic root of 13928911 is about 240.6055944546.

The spelling of 13928911 in words is "thirteen million, nine hundred twenty-eight thousand, nine hundred eleven".