539399533 has 4 divisors (see below), whose sum is σ = 540758620. Its totient is φ = 538040448.

The previous prime is 539399521. The next prime is 539399543. The reversal of 539399533 is 335993935.

It is a happy number.

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 268533769 + 270865764 = 16387^2 + 16458^2 .

It is a cyclic number.

It is not a de Polignac number, because 539399533 - 2²⁹ = 2528621 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 (539399503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 678948 + ... + 679741.

It is an arithmetic number, because the mean of its divisors is an integer number (135189655).

Almost surely, 2^539399533 is an apocalyptic number.

It is an amenable number.

539399533 is a deficient number, since it is larger than the sum of its proper divisors (1359087).

539399533 is a wasteful number, since it uses less digits than its factorization.

539399533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359086.

The product of its digits is 1476225, while the sum is 49.

The square root of 539399533 is about 23224.9764908385. The cubic root of 539399533 is about 814.0233363267.

The spelling of 539399533 in words is "five hundred thirty-nine million, three hundred ninety-nine thousand, five hundred thirty-three".