539947805 has 4 divisors (see below), whose sum is σ = 647937372. Its totient is φ = 431958240.

The previous prime is 539947777. The next prime is 539947867. The reversal of 539947805 is 508749935.

539947805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 179479609 + 360468196 = 13397^2 + 18986^2 .

It is not a de Polignac number, because 539947805 - 2²⁴ = 523170589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53994776 + ... + 53994785.

It is an arithmetic number, because the mean of its divisors is an integer number (161984343).

Almost surely, 2^539947805 is an apocalyptic number.

It is an amenable number.

539947805 is a deficient number, since it is larger than the sum of its proper divisors (107989567).

539947805 is a wasteful number, since it uses less digits than its factorization.

539947805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107989566.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 539947805 is about 23236.7769925177. The cubic root of 539947805 is about 814.2990472762.

The spelling of 539947805 in words is "five hundred thirty-nine million, nine hundred forty-seven thousand, eight hundred five".