5909 has 4 divisors (see below), whose sum is σ = 6240.
Its totient is φ = 5580.
The previous prime is 5903. The next prime is 5923. The reversal of 5909 is 9095.
Subtracting from 5909 its sum of digits (23), we obtain a triangular number (5886 = T108).
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 5909 - 28 = 5653 is a prime.
It is a Duffinian number.
It is a nialpdrome in base 14.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (5903) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137 + ... + 174.
It is an arithmetic number, because the mean of its divisors is an integer number (1560).
It is an amenable number.
5909 is a deficient number, since it is larger than the sum of its proper divisors (331).
5909 is a wasteful number, since it uses less digits than its factorization.
5909 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 330.
The product of its (nonzero) digits is 405, while the sum is 23.
The square root of 5909 is about 76.8700201639.
The cubic root of 5909 is about 18.0788720026.
The spelling of 5909 in words is "five thousand, nine hundred nine".