518489 has 4 divisors (see below), whose sum is σ = 541056. Its totient is φ = 495924.

The previous prime is 518473. The next prime is 518509. The reversal of 518489 is 984815.

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 518489 - 2⁴ = 518473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (518429) 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, 11249 + ... + 11294.

It is an arithmetic number, because the mean of its divisors is an integer number (135264).

2⁵¹⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

518489 is a deficient number, since it is larger than the sum of its proper divisors (22567).

518489 is a wasteful number, since it uses less digits than its factorization.

518489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22566.

The product of its digits is 11520, while the sum is 35.

The square root of 518489 is about 720.0618029031. The cubic root of 518489 is about 80.3365509330.

The spelling of 518489 in words is "five hundred eighteen thousand, four hundred eighty-nine".