539725993 has 8 divisors (see below), whose sum is σ = 560544840. Its totient is φ = 519235200.

The previous prime is 539725969. The next prime is 539725999. The reversal of 539725993 is 399527935.

It can be written as a sum of positive squares in 4 ways, for example, as 103876864 + 435849129 = 10192^2 + 20877^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-539725993 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 539725993.

It is not an unprimeable number, because it can be changed into a prime (539725999) 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, 78658 + ... + 85243.

It is an arithmetic number, because the mean of its divisors is an integer number (70068105).

Almost surely, 2^539725993 is an apocalyptic number.

It is an amenable number.

539725993 is a deficient number, since it is larger than the sum of its proper divisors (20818847).

539725993 is a wasteful number, since it uses less digits than its factorization.

539725993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164027.

The product of its digits is 2296350, while the sum is 52.

The square root of 539725993 is about 23232.0036372242. The cubic root of 539725993 is about 814.1875265961.

The spelling of 539725993 in words is "five hundred thirty-nine million, seven hundred twenty-five thousand, nine hundred ninety-three".