14378309 has 12 divisors (see below), whose sum is σ = 15896160. Its totient is φ = 12995400.

The previous prime is 14378293. The next prime is 14378321. The reversal of 14378309 is 90387341.

It is not a de Polignac number, because 14378309 - 2⁴ = 14378293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14374309) 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 in 11 ways as a sum of consecutive naturals, for example, 39872 + ... + 40230.

It is an arithmetic number, because the mean of its divisors is an integer number (1324680).

Almost surely, 2^14378309 is an apocalyptic number.

It is an amenable number.

14378309 is a deficient number, since it is larger than the sum of its proper divisors (1517851).

14378309 is a wasteful number, since it uses less digits than its factorization.

14378309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 14378309 is about 3791.8740749134. The cubic root of 14378309 is about 243.1658619142.

The spelling of 14378309 in words is "fourteen million, three hundred seventy-eight thousand, three hundred nine".