14378321 has 2 divisors, whose sum is σ = 14378322. Its totient is φ = 14378320.

The previous prime is 14378293. The next prime is 14378333. The reversal of 14378321 is 12387341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 1597696 = 3575^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 14378321 - 2⁶ = 14378257 is a prime.

It is a super-2 number, since 2×14378321² = 413472229558082, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (14378521) by changing a digit.

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 as a sum of consecutive naturals, namely, 7189160 + 7189161.

It is an arithmetic number, because the mean of its divisors is an integer number (7189161).

Almost surely, 2^14378321 is an apocalyptic number.

It is an amenable number.

14378321 is a deficient number, since it is larger than the sum of its proper divisors (1).

14378321 is an equidigital number, since it uses as much as digits as its factorization.

14378321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 14378321 is about 3791.8756572441. The cubic root of 14378321 is about 243.1659295622.

The spelling of 14378321 in words is "fourteen million, three hundred seventy-eight thousand, three hundred twenty-one".