4940909 has 2 divisors, whose sum is σ = 4940910. Its totient is φ = 4940908.

The previous prime is 4940899. The next prime is 4940911. The reversal of 4940909 is 9090494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3553225 + 1387684 = 1885^2 + 1178^2 .

It is a cyclic number.

It is not a de Polignac number, because 4940909 - 2²⁰ = 3892333 is a prime.

It is a Sophie Germain prime.

Together with 4940911, it forms a pair of twin primes.

It is a Chen prime.

4940909 is a modest number, since divided by 909 gives 494 as remainder.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4940959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2470454 + 2470455.

It is an arithmetic number, because the mean of its divisors is an integer number (2470455).

Almost surely, 2^4940909 is an apocalyptic number.

It is an amenable number.

4940909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4940909 is an equidigital number, since it uses as much as digits as its factorization.

4940909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 4940909 is about 2222.8155569008. The cubic root of 4940909 is about 170.3212954917.

The spelling of 4940909 in words is "four million, nine hundred forty thousand, nine hundred nine".