13916881 has 8 divisors (see below), whose sum is σ = 15339744. Its totient is φ = 12520320.

The previous prime is 13916879. The next prime is 13916887. The reversal of 13916881 is 18861931.

13916881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13916881 - 2¹ = 13916879 is a prime.

It is a super-2 number, since 2×13916881² = 387359153536322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13916881.

It is not an unprimeable number, because it can be changed into a prime (13916887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5455 + ... + 7588.

It is an arithmetic number, because the mean of its divisors is an integer number (1917468).

Almost surely, 2^13916881 is an apocalyptic number.

13916881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13916881 is a deficient number, since it is larger than the sum of its proper divisors (1422863).

13916881 is a wasteful number, since it uses less digits than its factorization.

13916881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13151.

The product of its digits is 10368, while the sum is 37.

The square root of 13916881 is about 3730.5336079440. The cubic root of 13916881 is about 240.5363064585.

It can be divided in two parts, 139 and 16881, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 13916881 in words is "thirteen million, nine hundred sixteen thousand, eight hundred eighty-one".