14406221 has 2 divisors, whose sum is σ = 14406222. Its totient is φ = 14406220.

The previous prime is 14406193. The next prime is 14406233. The reversal of 14406221 is 12260441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11464996 + 2941225 = 3386^2 + 1715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14406221 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 14406193 and 14406202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14406241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7203110 + 7203111.

It is an arithmetic number, because the mean of its divisors is an integer number (7203111).

Almost surely, 2^14406221 is an apocalyptic number.

It is an amenable number.

14406221 is a deficient number, since it is larger than the sum of its proper divisors (1).

14406221 is an equidigital number, since it uses as much as digits as its factorization.

14406221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 14406221 is about 3795.5527924138. The cubic root of 14406221 is about 243.3231093888.

Adding to 14406221 its reverse (12260441), we get a palindrome (26666662).

The spelling of 14406221 in words is "fourteen million, four hundred six thousand, two hundred twenty-one".