13943994 has 8 divisors (see below), whose sum is σ = 27888000. Its totient is φ = 4647996.

The previous prime is 13943989. The next prime is 13944013. The reversal of 13943994 is 49934931.

13943994 is digitally balanced in base 2 and base 4, because in such bases 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.

13943994 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161994 + ... + 1162005.

It is an arithmetic number, because the mean of its divisors is an integer number (3486000).

Almost surely, 2^13943994 is an apocalyptic number.

13943994 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.

13943994 is a wasteful number, since it uses less digits than its factorization.

13943994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324004.

The product of its digits is 104976, while the sum is 42.

The square root of 13943994 is about 3734.1657702893. The cubic root of 13943994 is about 240.6924101685.

The spelling of 13943994 in words is "thirteen million, nine hundred forty-three thousand, nine hundred ninety-four".