512839987 has 12 divisors (see below), whose sum is σ = 569186800. Its totient is φ = 461680560.

The previous prime is 512839949. The next prime is 512839997. The reversal of 512839987 is 789938215.

It is not a de Polignac number, because 512839987 - 2¹¹ = 512837939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512839927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8112 + ... + 33037.

Almost surely, 2^512839987 is an apocalyptic number.

512839987 is a deficient number, since it is larger than the sum of its proper divisors (56346813).

512839987 is a wasteful number, since it uses less digits than its factorization.

512839987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41274 (or 41263 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 52.

The square root of 512839987 is about 22645.9706570507. The cubic root of 512839987 is about 800.4372541966.

The spelling of 512839987 in words is "five hundred twelve million, eight hundred thirty-nine thousand, nine hundred eighty-seven".