4975909 has 2 divisors, whose sum is σ = 4975910. Its totient is φ = 4975908.

The previous prime is 4975897. The next prime is 4975913. The reversal of 4975909 is 9095794.

4975909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4884100 + 91809 = 2210^2 + 303^2 .

It is a cyclic number.

It is not a de Polignac number, because 4975909 - 2⁵ = 4975877 is a prime.

4975909 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4975969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2487954 + 2487955.

It is an arithmetic number, because the mean of its divisors is an integer number (2487955).

Almost surely, 2^4975909 is an apocalyptic number.

It is an amenable number.

4975909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4975909 is an equidigital number, since it uses as much as digits as its factorization.

4975909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 4975909 is about 2230.6745616517. The cubic root of 4975909 is about 170.7225188665.

Subtracting 4975909 from its reverse (9095794), we obtain a triangular number (4119885 = T₂₈₇₀).

The spelling of 4975909 in words is "four million, nine hundred seventy-five thousand, nine hundred nine".