4540909 has 2 divisors, whose sum is σ = 4540910. Its totient is φ = 4540908.

The previous prime is 4540903. The next prime is 4540919. The reversal of 4540909 is 9090454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4502884 + 38025 = 2122^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 4540909 - 2⁹ = 4540397 is a prime.

4540909 is a modest number, since divided by 909 gives 454 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4540903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270454 + 2270455.

It is an arithmetic number, because the mean of its divisors is an integer number (2270455).

Almost surely, 2^4540909 is an apocalyptic number.

It is an amenable number.

4540909 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540909 is an equidigital number, since it uses as much as digits as its factorization.

4540909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 4540909 is about 2130.9408720094. The cubic root of 4540909 is about 165.5951449213.

The spelling of 4540909 in words is "four million, five hundred forty thousand, nine hundred nine".