4688909 has 2 divisors, whose sum is σ = 4688910. Its totient is φ = 4688908.

The previous prime is 4688903. The next prime is 4688921. The reversal of 4688909 is 9098864.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2941225 + 1747684 = 1715^2 + 1322^2 .

It is a cyclic number.

It is not a de Polignac number, because 4688909 - 2⁸ = 4688653 is a prime.

It is a super-2 number, since 2×4688909² = 43971735220562, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4688909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4688903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2344454 + 2344455.

It is an arithmetic number, because the mean of its divisors is an integer number (2344455).

Almost surely, 2^4688909 is an apocalyptic number.

It is an amenable number.

4688909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4688909 is an equidigital number, since it uses as much as digits as its factorization.

4688909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 4688909 is about 2165.3888796242. The cubic root of 4688909 is about 167.3750043923.

The spelling of 4688909 in words is "four million, six hundred eighty-eight thousand, nine hundred nine".