14640309 has 6 divisors (see below), whose sum is σ = 21147126. Its totient is φ = 9760200.

The previous prime is 14640289. The next prime is 14640323. The reversal of 14640309 is 90304641.

14640309 is a `hidden beast` number, since 14 + 640 + 3 + 0 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8122500 + 6517809 = 2850^2 + 2553^2 .

It is not a de Polignac number, because 14640309 - 2⁷ = 14640181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14660309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 813342 + ... + 813359.

It is an arithmetic number, because the mean of its divisors is an integer number (3524521).

Almost surely, 2^14640309 is an apocalyptic number.

It is an amenable number.

14640309 is a deficient number, since it is larger than the sum of its proper divisors (6506817).

14640309 is a wasteful number, since it uses less digits than its factorization.

14640309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626707 (or 1626704 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 14640309 is about 3826.2656729506. The cubic root of 14640309 is about 244.6339612413.

The spelling of 14640309 in words is "fourteen million, six hundred forty thousand, three hundred nine".