516389 has 4 divisors (see below), whose sum is σ = 527424. Its totient is φ = 505356.

The previous prime is 516377. The next prime is 516391. The reversal of 516389 is 983615.

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 a de Polignac number, because none of the positive numbers 2^k-516389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516319) 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, 5447 + ... + 5540.

It is an arithmetic number, because the mean of its divisors is an integer number (131856).

2⁵¹⁶³⁸⁹ is an apocalyptic number.

It is an amenable number.

516389 is a deficient number, since it is larger than the sum of its proper divisors (11035).

516389 is a wasteful number, since it uses less digits than its factorization.

516389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11034.

The product of its digits is 6480, while the sum is 32.

The square root of 516389 is about 718.6021152209. The cubic root of 516389 is about 80.2279436543.

The spelling of 516389 in words is "five hundred sixteen thousand, three hundred eighty-nine".