13933994 has 4 divisors (see below), whose sum is σ = 20900994. Its totient is φ = 6966996.

The previous prime is 13933991. The next prime is 13934009. The reversal of 13933994 is 49933931.

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., 10080625 + 3853369 = 3175^2 + 1963^2 .

It is not an unprimeable number, because it can be changed into a prime (13933991) by changing a digit.

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, 3483497 + ... + 3483500.

Almost surely, 2^13933994 is an apocalyptic number.

13933994 is a deficient number, since it is larger than the sum of its proper divisors (6967000).

13933994 is an equidigital number, since it uses as much as digits as its factorization.

13933994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966999.

The product of its digits is 78732, while the sum is 41.

The square root of 13933994 is about 3732.8265429832. The cubic root of 13933994 is about 240.6348585155.

The spelling of 13933994 in words is "thirteen million, nine hundred thirty-three thousand, nine hundred ninety-four".