13994 has 4 divisors (see below), whose sum is σ = 20994. Its totient is φ = 6996.
The previous prime is 13967. The next prime is 13997. The reversal of 13994 is 49931.
It is a happy number.
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., 12769 + 1225 = 113^2 + 35^2 .
It is a plaindrome in base 16.
It is a nialpdrome in base 7.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 13994.
It is not an unprimeable number, because it can be changed into a prime (13997) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3497 + ... + 3500.
213994 is an apocalyptic number.
13994 is a deficient number, since it is larger than the sum of its proper divisors (7000).
13994 is an equidigital number, since it uses as much as digits as its factorization.
13994 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6999.
The product of its digits is 972, while the sum is 26.
The square root of 13994 is about 118.2962383172. The cubic root of 13994 is about 24.0979790894.
Subtracting 13994 from its reverse (49931), we obtain a cube (35937 = 333).
The spelling of 13994 in words is "thirteen thousand, nine hundred ninety-four".
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