539878109 has 2 divisors, whose sum is σ = 539878110. Its totient is φ = 539878108.

The previous prime is 539878099. The next prime is 539878127. The reversal of 539878109 is 901878935.

539878109 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., 291658084 + 248220025 = 17078^2 + 15755^2 .

It is a cyclic number.

It is not a de Polignac number, because 539878109 - 2⁴ = 539878093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (539878309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269939054 + 269939055.

It is an arithmetic number, because the mean of its divisors is an integer number (269939055).

Almost surely, 2^539878109 is an apocalyptic number.

It is an amenable number.

539878109 is a deficient number, since it is larger than the sum of its proper divisors (1).

539878109 is an equidigital number, since it uses as much as digits as its factorization.

539878109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 539878109 is about 23235.2772524883. The cubic root of 539878109 is about 814.2640094275.

The spelling of 539878109 in words is "five hundred thirty-nine million, eight hundred seventy-eight thousand, one hundred nine".