4520909 has 2 divisors, whose sum is σ = 4520910. Its totient is φ = 4520908.

The previous prime is 4520881. The next prime is 4520911. The reversal of 4520909 is 9090254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3988009 + 532900 = 1997^2 + 730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4520909 is a prime.

Together with 4520911, it forms a pair of twin primes.

It is a Chen prime.

4520909 is a modest number, since divided by 909 gives 452 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4520609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2260454 + 2260455.

It is an arithmetic number, because the mean of its divisors is an integer number (2260455).

Almost surely, 2^4520909 is an apocalyptic number.

It is an amenable number.

4520909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4520909 is an equidigital number, since it uses as much as digits as its factorization.

4520909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 4520909 is about 2126.2429306173. The cubic root of 4520909 is about 165.3516711183.

The spelling of 4520909 in words is "four million, five hundred twenty thousand, nine hundred nine".