509797863 has 6 divisors (see below), whose sum is σ = 736374704. Its totient is φ = 339865236.

The previous prime is 509797843. The next prime is 509797867. The reversal of 509797863 is 368797905.

509797863 is a `hidden beast` number, since 509 + 7 + 9 + 78 + 63 = 666.

It is not a de Polignac number, because 509797863 - 2¹⁰ = 509796839 is a prime.

It is a super-2 number, since 2×509797863² = 519787722238733538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509797867) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28322095 + ... + 28322112.

Almost surely, 2^509797863 is an apocalyptic number.

509797863 is a deficient number, since it is larger than the sum of its proper divisors (226576841).

509797863 is a wasteful number, since it uses less digits than its factorization.

509797863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56644213 (or 56644210 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 509797863 is about 22578.7037493298. The cubic root of 509797863 is about 798.8514053480.

The spelling of 509797863 in words is "five hundred nine million, seven hundred ninety-seven thousand, eight hundred sixty-three".