14921 has 4 divisors (see below), whose sum is σ = 15312. Its totient is φ = 14532.

The previous prime is 14897. The next prime is 14923. The reversal of 14921 is 12941.

It is a happy number.

14921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14921 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 14921.

It is not an unprimeable number, because it can be changed into a prime (14923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131 + ... + 216.

It is an arithmetic number, because the mean of its divisors is an integer number (3828).

2¹⁴⁹²¹ is an apocalyptic number.

It is an amenable number.

14921 is a deficient number, since it is larger than the sum of its proper divisors (391).

14921 is an equidigital number, since it uses as much as digits as its factorization.

14921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390.

The product of its digits is 72, while the sum is 17.

The square root of 14921 is about 122.1515452215. The cubic root of 14921 is about 24.6187487890.

The spelling of 14921 in words is "fourteen thousand, nine hundred twenty-one".