4644509 has 2 divisors, whose sum is σ = 4644510. Its totient is φ = 4644508.

The previous prime is 4644481. The next prime is 4644511. The reversal of 4644509 is 9054464.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4644025 + 484 = 2155^2 + 22^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4644509 is a prime.

Together with 4644511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4644589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322254 + 2322255.

It is an arithmetic number, because the mean of its divisors is an integer number (2322255).

Almost surely, 2^4644509 is an apocalyptic number.

It is an amenable number.

4644509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4644509 is an equidigital number, since it uses as much as digits as its factorization.

4644509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 4644509 is about 2155.1122940580. The cubic root of 4644509 is about 166.8450281661.

The spelling of 4644509 in words is "four million, six hundred forty-four thousand, five hundred nine".