539845909 has 8 divisors (see below), whose sum is σ = 546314040. Its totient is φ = 533400000.

The previous prime is 539845907. The next prime is 539845919. The reversal of 539845909 is 909548935.

It can be written as a sum of positive squares in 4 ways, for example, as 250335684 + 289510225 = 15822^2 + 17015^2 .

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 539845909 - 2¹ = 539845907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539845907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46159 + ... + 56659.

It is an arithmetic number, because the mean of its divisors is an integer number (68289255).

Almost surely, 2^539845909 is an apocalyptic number.

It is an amenable number.

539845909 is a deficient number, since it is larger than the sum of its proper divisors (6468131).

539845909 is a wasteful number, since it uses less digits than its factorization.

539845909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11111.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The square root of 539845909 is about 23234.5843302608. The cubic root of 539845909 is about 814.2478206977.

The spelling of 539845909 in words is "five hundred thirty-nine million, eight hundred forty-five thousand, nine hundred nine".