4664509 has 4 divisors (see below), whose sum is σ = 4670460. Its totient is φ = 4658560.

The previous prime is 4664507. The next prime is 4664521. The reversal of 4664509 is 9054664.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1932100 + 2732409 = 1390^2 + 1653^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664509 - 2¹ = 4664507 is a prime.

It is a super-2 number, since 2×4664509² = 43515288422162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4664507) 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, 1582 + ... + 3439.

It is an arithmetic number, because the mean of its divisors is an integer number (1167615).

Almost surely, 2^4664509 is an apocalyptic number.

It is an amenable number.

4664509 is a deficient number, since it is larger than the sum of its proper divisors (5951).

4664509 is an equidigital number, since it uses as much as digits as its factorization.

4664509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 4664509 is about 2159.7474389382. The cubic root of 4664509 is about 167.0841723717.

The spelling of 4664509 in words is "four million, six hundred sixty-four thousand, five hundred nine".