539864909 has 2 divisors, whose sum is σ = 539864910. Its totient is φ = 539864908.

The previous prime is 539864893. The next prime is 539864929. The reversal of 539864909 is 909468935.

539864909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532455625 + 7409284 = 23075^2 + 2722^2 .

It is a cyclic number.

It is not a de Polignac number, because 539864909 - 2⁴ = 539864893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (539864929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269932454 + 269932455.

It is an arithmetic number, because the mean of its divisors is an integer number (269932455).

Almost surely, 2^539864909 is an apocalyptic number.

It is an amenable number.

539864909 is a deficient number, since it is larger than the sum of its proper divisors (1).

539864909 is an equidigital number, since it uses as much as digits as its factorization.

539864909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The square root of 539864909 is about 23234.9931999129. The cubic root of 539864909 is about 814.2573731316.

It can be divided in two parts, 5398 and 64909, that added together give a palindrome (70307).

The spelling of 539864909 in words is "five hundred thirty-nine million, eight hundred sixty-four thousand, nine hundred nine".