14285309 has 2 divisors, whose sum is σ = 14285310. Its totient is φ = 14285308.

The previous prime is 14285291. The next prime is 14285311. The reversal of 14285309 is 90358241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13344409 + 940900 = 3653^2 + 970^2 .

It is an emirp because it is prime and its reverse (90358241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14285309 is a prime.

Together with 14285311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14285329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7142654 + 7142655.

It is an arithmetic number, because the mean of its divisors is an integer number (7142655).

Almost surely, 2^14285309 is an apocalyptic number.

It is an amenable number.

14285309 is a deficient number, since it is larger than the sum of its proper divisors (1).

14285309 is an equidigital number, since it uses as much as digits as its factorization.

14285309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 14285309 is about 3779.5911154515. The cubic root of 14285309 is about 242.6404557070.

The spelling of 14285309 in words is "fourteen million, two hundred eighty-five thousand, three hundred nine".