512989209 has 12 divisors (see below), whose sum is σ = 764887552. Its totient is φ = 330960600.

The previous prime is 512989193. The next prime is 512989241. The reversal of 512989209 is 902989215.

It is not a de Polignac number, because 512989209 - 2⁴ = 512989193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (512989249) 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, 919057 + ... + 919614.

Almost surely, 2^512989209 is an apocalyptic number.

It is an amenable number.

512989209 is a deficient number, since it is larger than the sum of its proper divisors (251898343).

512989209 is a wasteful number, since it uses less digits than its factorization.

512989209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838708 (or 1838705 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 512989209 is about 22649.2650874151. The cubic root of 512989209 is about 800.5148815710.

The spelling of 512989209 in words is "five hundred twelve million, nine hundred eighty-nine thousand, two hundred nine".