13961911 has 4 divisors (see below), whose sum is σ = 14004424. Its totient is φ = 13919400.

The previous prime is 13961891. The next prime is 13961917. The reversal of 13961911 is 11916931.

13961911 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13961911 - 2⁹ = 13961399 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 (13961917) 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, 20760 + ... + 21421.

It is an arithmetic number, because the mean of its divisors is an integer number (3501106).

Almost surely, 2^13961911 is an apocalyptic number.

13961911 is a deficient number, since it is larger than the sum of its proper divisors (42513).

13961911 is an equidigital number, since it uses as much as digits as its factorization.

13961911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42512.

The product of its digits is 1458, while the sum is 31.

The square root of 13961911 is about 3736.5640634144. The cubic root of 13961911 is about 240.7954566881.

The spelling of 13961911 in words is "thirteen million, nine hundred sixty-one thousand, nine hundred eleven".