540704009 has 2 divisors, whose sum is σ = 540704010. Its totient is φ = 540704008.

The previous prime is 540703993. The next prime is 540704011. The reversal of 540704009 is 900407045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 532455625 + 8248384 = 23075^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 540704009 - 2⁴ = 540703993 is a prime.

Together with 540704011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (540704029) 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, 270352004 + 270352005.

It is an arithmetic number, because the mean of its divisors is an integer number (270352005).

Almost surely, 2^540704009 is an apocalyptic number.

It is an amenable number.

540704009 is a deficient number, since it is larger than the sum of its proper divisors (1).

540704009 is an equidigital number, since it uses as much as digits as its factorization.

540704009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 540704009 is about 23253.0430051639. The cubic root of 540704009 is about 814.6790154551.

The spelling of 540704009 in words is "five hundred forty million, seven hundred four thousand, nine".