509492 has 6 divisors (see below), whose sum is σ = 891618. Its totient is φ = 254744.

The previous prime is 509477. The next prime is 509513. The reversal of 509492 is 294905.

It can be written as a sum of positive squares in only one way, i.e., 376996 + 132496 = 614^2 + 364^2 .

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

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 509492.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63683 + ... + 63690.

It is an arithmetic number, because the mean of its divisors is an integer number (148603).

2⁵⁰⁹⁴⁹² is an apocalyptic number.

It is an amenable number.

509492 is a deficient number, since it is larger than the sum of its proper divisors (382126).

509492 is a wasteful number, since it uses less digits than its factorization.

509492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127377 (or 127375 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 509492 is about 713.7870830997. The cubic root of 509492 is about 79.8691611315.

It can be divided in two parts, 509 and 492, that added together give a palindrome (1001).

The spelling of 509492 in words is "five hundred nine thousand, four hundred ninety-two".