4328009 has 4 divisors (see below), whose sum is σ = 4946304. Its totient is φ = 3709716.

The previous prime is 4327963. The next prime is 4328017. The reversal of 4328009 is 9008234.

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 a de Polignac number, because none of the positive numbers 2^k-4328009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4328059) 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, 309137 + ... + 309150.

It is an arithmetic number, because the mean of its divisors is an integer number (1236576).

Almost surely, 2^4328009 is an apocalyptic number.

It is an amenable number.

4328009 is a deficient number, since it is larger than the sum of its proper divisors (618295).

4328009 is an equidigital number, since it uses as much as digits as its factorization.

4328009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618294.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4328009 is about 2080.3867428918. The cubic root of 4328009 is about 162.9656419485.

The spelling of 4328009 in words is "four million, three hundred twenty-eight thousand, nine".