4638909 has 16 divisors (see below), whose sum is σ = 7145280. Its totient is φ = 2645760.

The previous prime is 4638899. The next prime is 4638911. The reversal of 4638909 is 9098364.

4638909 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4638909 - 2⁹ = 4638397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3574 + ... + 4695.

It is an arithmetic number, because the mean of its divisors is an integer number (446580).

Almost surely, 2^4638909 is an apocalyptic number.

It is an amenable number.

4638909 is a deficient number, since it is larger than the sum of its proper divisors (2506371).

4638909 is a wasteful number, since it uses less digits than its factorization.

4638909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8300.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 4638909 is about 2153.8126659485. The cubic root of 4638909 is about 166.7779447976. Note that the first 3 decimals are identical.

The spelling of 4638909 in words is "four million, six hundred thirty-eight thousand, nine hundred nine".