14109509 has 4 divisors (see below), whose sum is σ = 14126304. Its totient is φ = 14092716.

The previous prime is 14109503. The next prime is 14109521. The reversal of 14109509 is 90590141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 14109509 - 2¹⁶ = 14043973 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 (14109503) 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 3 ways as a sum of consecutive naturals, for example, 7067 + ... + 8840.

It is an arithmetic number, because the mean of its divisors is an integer number (3531576).

Almost surely, 2^14109509 is an apocalyptic number.

It is an amenable number.

14109509 is a deficient number, since it is larger than the sum of its proper divisors (16795).

14109509 is an equidigital number, since it uses as much as digits as its factorization.

14109509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16794.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 14109509 is about 3756.2626372500. The cubic root of 14109509 is about 241.6410051759.

The spelling of 14109509 in words is "fourteen million, one hundred nine thousand, five hundred nine".