13997894 has 8 divisors (see below), whose sum is σ = 21720960. Its totient is φ = 6757576.

The previous prime is 13997881. The next prime is 13997909. The reversal of 13997894 is 49879931.

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

It is a plaindrome in base 15.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 120614 + ... + 120729.

It is an arithmetic number, because the mean of its divisors is an integer number (2715120).

Almost surely, 2^13997894 is an apocalyptic number.

13997894 is a deficient number, since it is larger than the sum of its proper divisors (7723066).

13997894 is a wasteful number, since it uses less digits than its factorization.

13997894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241374.

The product of its digits is 489888, while the sum is 50.

The square root of 13997894 is about 3741.3759501018. The cubic root of 13997894 is about 241.0021406696.

The spelling of 13997894 in words is "thirteen million, nine hundred ninety-seven thousand, eight hundred ninety-four".