13947918 has 8 divisors (see below), whose sum is σ = 27895848. Its totient is φ = 4649304.

The previous prime is 13947911. The next prime is 13947937. The reversal of 13947918 is 81974931.

It is a happy number.

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

13947918 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 13947918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13947911) 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, 1162321 + ... + 1162332.

It is an arithmetic number, because the mean of its divisors is an integer number (3486981).

Almost surely, 2^13947918 is an apocalyptic number.

13947918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13947918 is a wasteful number, since it uses less digits than its factorization.

13947918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324658.

The product of its digits is 54432, while the sum is 42.

The square root of 13947918 is about 3734.6911518893. The cubic root of 13947918 is about 240.7149859201.

The spelling of 13947918 in words is "thirteen million, nine hundred forty-seven thousand, nine hundred eighteen".