13911655 has 4 divisors (see below), whose sum is σ = 16693992. Its totient is φ = 11129320.

The previous prime is 13911649. The next prime is 13911659. The reversal of 13911655 is 55611931.

13911655 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 55611931 = 61 ⋅911671.

It is not a de Polignac number, because 13911655 - 2³ = 13911647 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13911659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391161 + ... + 1391170.

It is an arithmetic number, because the mean of its divisors is an integer number (4173498).

Almost surely, 2^13911655 is an apocalyptic number.

13911655 is a deficient number, since it is larger than the sum of its proper divisors (2782337).

13911655 is an equidigital number, since it uses as much as digits as its factorization.

13911655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782336.

The product of its digits is 4050, while the sum is 31.

The square root of 13911655 is about 3729.8331061859. The cubic root of 13911655 is about 240.5061943446.

The spelling of 13911655 in words is "thirteen million, nine hundred eleven thousand, six hundred fifty-five".