509470 has 16 divisors (see below), whose sum is σ = 987840. Its totient is φ = 188064.

The previous prime is 509449. The next prime is 509477. The reversal of 509470 is 74905.

509470 = 150² + 151² + ... + 169².

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509477) by changing a digit.

509470 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2⁵⁰⁹⁴⁷⁰ is an apocalyptic number.

509470 is a deficient number, since it is larger than the sum of its proper divisors (478370).

509470 is a wasteful number, since it uses less digits than its factorization.

509470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 509470 is about 713.7716721754. The cubic root of 509470 is about 79.8680115245.

It can be divided in two parts, 509 and 470, that added together give a palindrome (979).

The spelling of 509470 in words is "five hundred nine thousand, four hundred seventy".