509487 has 8 divisors (see below), whose sum is σ = 741120. Its totient is φ = 308760.

The previous prime is 509477. The next prime is 509513. The reversal of 509487 is 784905.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 509487 - 2⁷ = 509359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 15439 = 509487 / (5 + 0 + 9 + 4 + 8 + 7).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 509487.

It is not an unprimeable number, because it can be changed into a prime (509417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7687 + ... + 7752.

It is an arithmetic number, because the mean of its divisors is an integer number (92640).

2⁵⁰⁹⁴⁸⁷ is an apocalyptic number.

509487 is a deficient number, since it is larger than the sum of its proper divisors (231633).

509487 is a wasteful number, since it uses less digits than its factorization.

509487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 509487 is about 713.7835806461. The cubic root of 509487 is about 79.8688998601.

The spelling of 509487 in words is "five hundred nine thousand, four hundred eighty-seven".