512686489 has 4 divisors (see below), whose sum is σ = 585927424. Its totient is φ = 439445556.

The previous prime is 512686457. The next prime is 512686511. The reversal of 512686489 is 984686215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 512686489 - 2⁵ = 512686457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (512686409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36620457 + ... + 36620470.

It is an arithmetic number, because the mean of its divisors is an integer number (146481856).

Almost surely, 2^512686489 is an apocalyptic number.

It is an amenable number.

512686489 is a deficient number, since it is larger than the sum of its proper divisors (73240935).

512686489 is an equidigital number, since it uses as much as digits as its factorization.

512686489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73240934.

The product of its digits is 829440, while the sum is 49.

The square root of 512686489 is about 22642.5813236919. The cubic root of 512686489 is about 800.3573866738.

The spelling of 512686489 in words is "five hundred twelve million, six hundred eighty-six thousand, four hundred eighty-nine".