4609309 has 2 divisors, whose sum is σ = 4609310. Its totient is φ = 4609308.

The previous prime is 4609307. The next prime is 4609313. The reversal of 4609309 is 9039064.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2732409 + 1876900 = 1653^2 + 1370^2 .

It is a cyclic number.

It is not a de Polignac number, because 4609309 - 2¹ = 4609307 is a prime.

Together with 4609307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4609301) 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, 2304654 + 2304655.

It is an arithmetic number, because the mean of its divisors is an integer number (2304655).

Almost surely, 2^4609309 is an apocalyptic number.

It is an amenable number.

4609309 is a deficient number, since it is larger than the sum of its proper divisors (1).

4609309 is an equidigital number, since it uses as much as digits as its factorization.

4609309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 4609309 is about 2146.9301339354. The cubic root of 4609309 is about 166.4224614688.

The spelling of 4609309 in words is "four million, six hundred nine thousand, three hundred nine".