13990894 has 8 divisors (see below), whose sum is σ = 21092400. Its totient is φ = 6960096.

The previous prime is 13990891. The next prime is 13990909. The reversal of 13990894 is 49809931.

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

It is a super-2 number, since 2×13990894² = 391490229838472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13990894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17179 + ... + 17974.

It is an arithmetic number, because the mean of its divisors is an integer number (2636550).

Almost surely, 2^13990894 is an apocalyptic number.

13990894 is a deficient number, since it is larger than the sum of its proper divisors (7101506).

13990894 is a wasteful number, since it uses less digits than its factorization.

13990894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35354.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 13990894 is about 3740.4403484082. The cubic root of 13990894 is about 240.9619609046.

It can be divided in two parts, 13990 and 894, that added together give a square (14884 = 122²).

The spelling of 13990894 in words is "thirteen million, nine hundred ninety thousand, eight hundred ninety-four".