509396 has 12 divisors (see below), whose sum is σ = 896448. Its totient is φ = 253272.

The previous prime is 509393. The next prime is 509413. The reversal of 509396 is 693905.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509393) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1205 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (74704).

2⁵⁰⁹³⁹⁶ is an apocalyptic number.

It is an amenable number.

509396 is a deficient number, since it is larger than the sum of its proper divisors (387052).

509396 is a wasteful number, since it uses less digits than its factorization.

509396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 716 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 509396 is about 713.7198329877. The cubic root of 509396 is about 79.8641444214.

The spelling of 509396 in words is "five hundred nine thousand, three hundred ninety-six".