539920709 has 8 divisors (see below), whose sum is σ = 545913720. Its totient is φ = 533946816.

The previous prime is 539920691. The next prime is 539920723. The reversal of 539920709 is 907029935.

It can be written as a sum of positive squares in 4 ways, for example, as 1216609 + 538704100 = 1103^2 + 23210^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 539920709 - 2⁸ = 539920453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 539920709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539920109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56267 + ... + 65159.

It is an arithmetic number, because the mean of its divisors is an integer number (68239215).

Almost surely, 2^539920709 is an apocalyptic number.

It is an amenable number.

539920709 is a deficient number, since it is larger than the sum of its proper divisors (5993011).

539920709 is a wasteful number, since it uses less digits than its factorization.

539920709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9559.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 539920709 is about 23236.1939439315. The cubic root of 539920709 is about 814.2854258262.

The spelling of 539920709 in words is "five hundred thirty-nine million, nine hundred twenty thousand, seven hundred nine".