509788 has 6 divisors (see below), whose sum is σ = 892136. Its totient is φ = 254892.

The previous prime is 509783. The next prime is 509797. The reversal of 509788 is 887905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63720 + ... + 63727.

2⁵⁰⁹⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

509788 is a deficient number, since it is larger than the sum of its proper divisors (382348).

509788 is a wasteful number, since it uses less digits than its factorization.

509788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127451 (or 127449 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 509788 is about 713.9943977371. The cubic root of 509788 is about 79.8846253553.

The spelling of 509788 in words is "five hundred nine thousand, seven hundred eighty-eight".