5909509 has 2 divisors, whose sum is σ = 5909510. Its totient is φ = 5909508.

The previous prime is 5909483. The next prime is 5909549. The reversal of 5909509 is 9059095.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 77284 = 2415^2 + 278^2 .

It is a cyclic number.

It is not a de Polignac number, because 5909509 - 2²¹ = 3812357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5909549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2954754 + 2954755.

It is an arithmetic number, because the mean of its divisors is an integer number (2954755).

Almost surely, 2^5909509 is an apocalyptic number.

It is an amenable number.

5909509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5909509 is an equidigital number, since it uses as much as digits as its factorization.

5909509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18225, while the sum is 37.

The square root of 5909509 is about 2430.9481689250. The cubic root of 5909509 is about 180.7939109110.

The spelling of 5909509 in words is "five million, nine hundred nine thousand, five hundred nine".