14785409 has 2 divisors, whose sum is σ = 14785410. Its totient is φ = 14785408.

The previous prime is 14785399. The next prime is 14785423. The reversal of 14785409 is 90458741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14025025 + 760384 = 3745^2 + 872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14785409 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (14785499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7392704 + 7392705.

It is an arithmetic number, because the mean of its divisors is an integer number (7392705).

Almost surely, 2^14785409 is an apocalyptic number.

It is an amenable number.

14785409 is a deficient number, since it is larger than the sum of its proper divisors (1).

14785409 is an equidigital number, since it uses as much as digits as its factorization.

14785409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 14785409 is about 3845.1799697803. The cubic root of 14785409 is about 245.4394943550.

The spelling of 14785409 in words is "fourteen million, seven hundred eighty-five thousand, four hundred nine".