4678909 has 4 divisors (see below), whose sum is σ = 4805404. Its totient is φ = 4552416.

The previous prime is 4678907. The next prime is 4678937. The reversal of 4678909 is 9098764.

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 2815684 + 1863225 = 1678^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 4678909 - 2¹ = 4678907 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 (4678901) 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, 63192 + ... + 63265.

It is an arithmetic number, because the mean of its divisors is an integer number (1201351).

Almost surely, 2^4678909 is an apocalyptic number.

It is an amenable number.

4678909 is a deficient number, since it is larger than the sum of its proper divisors (126495).

4678909 is a wasteful number, since it uses less digits than its factorization.

4678909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126494.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 4678909 is about 2163.0785931168. The cubic root of 4678909 is about 167.2559332451.

The spelling of 4678909 in words is "four million, six hundred seventy-eight thousand, nine hundred nine".