14591909 has 2 divisors, whose sum is σ = 14591910. Its totient is φ = 14591908.

The previous prime is 14591903. The next prime is 14591947. The reversal of 14591909 is 90919541.

It is an a-pointer prime, because the next prime (14591947) can be obtained adding 14591909 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12180100 + 2411809 = 3490^2 + 1553^2 .

It is a cyclic number.

It is not a de Polignac number, because 14591909 - 2¹⁶ = 14526373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14591903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7295954 + 7295955.

It is an arithmetic number, because the mean of its divisors is an integer number (7295955).

Almost surely, 2^14591909 is an apocalyptic number.

It is an amenable number.

14591909 is a deficient number, since it is larger than the sum of its proper divisors (1).

14591909 is an equidigital number, since it uses as much as digits as its factorization.

14591909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 14591909 is about 3819.9357324437. The cubic root of 14591909 is about 244.3640817941.

The spelling of 14591909 in words is "fourteen million, five hundred ninety-one thousand, nine hundred nine".