539294890689 has 81 divisors (see below), whose sum is σ = 845675477283. Its totient is φ = 331134892704.

The previous prime is 539294890681. The next prime is 539294890709. The reversal of 539294890689 is 986098492935.

The square root of 539294890689 is 734367.

It is a perfect power (a square), and thus also a powerful number.

539294890689 is a `hidden beast` number, since 5 + 392 + 94 + 8 + 90 + 68 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 282793159089 + 256501731600 = 531783^2 + 506460^2 .

It is not a de Polignac number, because 539294890689 - 2³ = 539294890681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (539294890681) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1469468184 + ... + 1469468550.

Almost surely, 2^539294890689 is an apocalyptic number.

539294890689 is the 734367-th square number.

539294890689 is the 367184-th centered octagonal number.

It is an amenable number.

539294890689 is a deficient number, since it is larger than the sum of its proper divisors (306380586594).

539294890689 is an equidigital number, since it uses as much as digits as its factorization.

539294890689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 302330880, while the sum is 72.

The spelling of 539294890689 in words is "five hundred thirty-nine billion, two hundred ninety-four million, eight hundred ninety thousand, six hundred eighty-nine".