13989894 has 8 divisors (see below), whose sum is σ = 27979800. Its totient is φ = 4663296.

The previous prime is 13989869. The next prime is 13989907. The reversal of 13989894 is 49898931.

It is a happy number.

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

13989894 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 1165819 + ... + 1165830.

It is an arithmetic number, because the mean of its divisors is an integer number (3497475).

Almost surely, 2^13989894 is an apocalyptic number.

13989894 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.

13989894 is a wasteful number, since it uses less digits than its factorization.

13989894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331654.

The product of its digits is 559872, while the sum is 51.

The square root of 13989894 is about 3740.3066719188. The cubic root of 13989894 is about 240.9562198442.

The spelling of 13989894 in words is "thirteen million, nine hundred eighty-nine thousand, eight hundred ninety-four".