539981837 has 2 divisors, whose sum is σ = 539981838. Its totient is φ = 539981836.

The previous prime is 539981809. The next prime is 539981867. The reversal of 539981837 is 738189935.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 484836361 + 55145476 = 22019^2 + 7426^2 .

It is a cyclic number.

It is not a de Polignac number, because 539981837 - 2⁶ = 539981773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (539981867) 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 as a sum of consecutive naturals, namely, 269990918 + 269990919.

It is an arithmetic number, because the mean of its divisors is an integer number (269990919).

Almost surely, 2^539981837 is an apocalyptic number.

It is an amenable number.

539981837 is a deficient number, since it is larger than the sum of its proper divisors (1).

539981837 is an equidigital number, since it uses as much as digits as its factorization.

539981837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 53.

The square root of 539981837 is about 23237.5092684220. The cubic root of 539981837 is about 814.3161548822.

The spelling of 539981837 in words is "five hundred thirty-nine million, nine hundred eighty-one thousand, eight hundred thirty-seven".