509794 has 8 divisors (see below), whose sum is σ = 783468. Its totient is φ = 248640.

The previous prime is 509783. The next prime is 509797. The reversal of 509794 is 497905.

It can be written as a sum of positive squares in 2 ways, for example, as 497025 + 12769 = 705^2 + 113^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509797) 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, 3027 + ... + 3190.

2⁵⁰⁹⁷⁹⁴ is an apocalyptic number.

509794 is a deficient number, since it is larger than the sum of its proper divisors (273674).

509794 is a wasteful number, since it uses less digits than its factorization.

509794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 509794 is about 713.9985994384. The cubic root of 509794 is about 79.8849387574.

The spelling of 509794 in words is "five hundred nine thousand, seven hundred ninety-four".