13983994 has 4 divisors (see below), whose sum is σ = 20975994. Its totient is φ = 6991996.

The previous prime is 13983971. The next prime is 13984021. The reversal of 13983994 is 49938931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11471769 + 2512225 = 3387^2 + 1585^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3495997 + ... + 3496000.

Almost surely, 2^13983994 is an apocalyptic number.

13983994 is a deficient number, since it is larger than the sum of its proper divisors (6992000).

13983994 is an equidigital number, since it uses as much as digits as its factorization.

13983994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991999.

The product of its digits is 209952, while the sum is 46.

The square root of 13983994 is about 3739.5178833641. The cubic root of 13983994 is about 240.9223420179.

The spelling of 13983994 in words is "thirteen million, nine hundred eighty-three thousand, nine hundred ninety-four".