539569643 has 2 divisors, whose sum is σ = 539569644. Its totient is φ = 539569642.

The previous prime is 539569607. The next prime is 539569697. The reversal of 539569643 is 346965935.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 539569643 - 2¹² = 539565547 is a prime.

It is a super-2 number, since 2×539569643² = 582270799294294898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 539569591 and 539569600.

It is not a weakly prime, because it can be changed into another prime (539569243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269784821 + 269784822.

It is an arithmetic number, because the mean of its divisors is an integer number (269784822).

Almost surely, 2^539569643 is an apocalyptic number.

539569643 is a deficient number, since it is larger than the sum of its proper divisors (1).

539569643 is an equidigital number, since it uses as much as digits as its factorization.

539569643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2624400, while the sum is 50.

The square root of 539569643 is about 23228.6384232912. The cubic root of 539569643 is about 814.1088999624.

The spelling of 539569643 in words is "five hundred thirty-nine million, five hundred sixty-nine thousand, six hundred forty-three".