14318921 has 2 divisors, whose sum is σ = 14318922. Its totient is φ = 14318920.

The previous prime is 14318897. The next prime is 14318923. The reversal of 14318921 is 12981341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 2758921 = 3400^2 + 1661^2 .

It is an emirp because it is prime and its reverse (12981341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14318921 is a prime.

Together with 14318923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14318923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7159460 + 7159461.

It is an arithmetic number, because the mean of its divisors is an integer number (7159461).

Almost surely, 2^14318921 is an apocalyptic number.

It is an amenable number.

14318921 is a deficient number, since it is larger than the sum of its proper divisors (1).

14318921 is an equidigital number, since it uses as much as digits as its factorization.

14318921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 29.

The square root of 14318921 is about 3784.0350156942. The cubic root of 14318921 is about 242.8306101018.

The spelling of 14318921 in words is "fourteen million, three hundred eighteen thousand, nine hundred twenty-one".