4328909 has 4 divisors (see below), whose sum is σ = 4661916. Its totient is φ = 3995904.

The previous prime is 4328893. The next prime is 4328921. The reversal of 4328909 is 9098234.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9098234 = 2 ⋅4549117.

It can be written as a sum of positive squares in 2 ways, for example, as 2941225 + 1387684 = 1715^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 4328909 - 2⁴ = 4328893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4328969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166484 + ... + 166509.

It is an arithmetic number, because the mean of its divisors is an integer number (1165479).

Almost surely, 2^4328909 is an apocalyptic number.

It is an amenable number.

4328909 is a deficient number, since it is larger than the sum of its proper divisors (333007).

4328909 is a wasteful number, since it uses less digits than its factorization.

4328909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333006.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 4328909 is about 2080.6030375831. The cubic root of 4328909 is about 162.9769372818.

The spelling of 4328909 in words is "four million, three hundred twenty-eight thousand, nine hundred nine".