14439209 has 2 divisors, whose sum is σ = 14439210. Its totient is φ = 14439208.

The previous prime is 14439197. The next prime is 14439223. The reversal of 14439209 is 90293441.

It is a happy number.

14439209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13542400 + 896809 = 3680^2 + 947^2 .

It is a cyclic number.

It is not a de Polignac number, because 14439209 - 2⁸ = 14438953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14439289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7219604 + 7219605.

It is an arithmetic number, because the mean of its divisors is an integer number (7219605).

Almost surely, 2^14439209 is an apocalyptic number.

It is an amenable number.

14439209 is a deficient number, since it is larger than the sum of its proper divisors (1).

14439209 is an equidigital number, since it uses as much as digits as its factorization.

14439209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 14439209 is about 3799.8959196273. The cubic root of 14439209 is about 243.5086918038.

The spelling of 14439209 in words is "fourteen million, four hundred thirty-nine thousand, two hundred nine".