13984346881 has 4 divisors (see below), whose sum is σ = 14152833072. Its totient is φ = 13815860692.

The previous prime is 13984346869. The next prime is 13984346933. The reversal of 13984346881 is 18864348931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18864348931 = 863 ⋅21859037.

It is a cyclic number.

It is not a de Polignac number, because 13984346881 - 2¹¹ = 13984344833 is a prime.

It is a super-2 number, since 2×13984346881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13984346851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84242971 + ... + 84243136.

It is an arithmetic number, because the mean of its divisors is an integer number (3538208268).

Almost surely, 2^13984346881 is an apocalyptic number.

It is an amenable number.

13984346881 is a deficient number, since it is larger than the sum of its proper divisors (168486191).

13984346881 is an equidigital number, since it uses as much as digits as its factorization.

13984346881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168486190.

The product of its digits is 3981312, while the sum is 55.

The spelling of 13984346881 in words is "thirteen billion, nine hundred eighty-four million, three hundred forty-six thousand, eight hundred eighty-one".