4320909 has 6 divisors (see below), whose sum is σ = 6241326. Its totient is φ = 2880600.

The previous prime is 4320893. The next prime is 4320917. The reversal of 4320909 is 9090234.

4320909 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 459684 = 1965^2 + 678^2 .

It is not a de Polignac number, because 4320909 - 2⁴ = 4320893 is a prime.

4320909 is a modest number, since divided by 909 gives 432 as remainder.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 240042 + ... + 240059.

It is an arithmetic number, because the mean of its divisors is an integer number (1040221).

Almost surely, 2^4320909 is an apocalyptic number.

It is an amenable number.

4320909 is a deficient number, since it is larger than the sum of its proper divisors (1920417).

4320909 is a wasteful number, since it uses less digits than its factorization.

4320909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480107 (or 480104 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 4320909 is about 2078.6796289953. The cubic root of 4320909 is about 162.8764793687.

The spelling of 4320909 in words is "four million, three hundred twenty thousand, nine hundred nine".