505839 has 8 divisors (see below), whose sum is σ = 703872. Its totient is φ = 322520.

The previous prime is 505823. The next prime is 505867. The reversal of 505839 is 938505.

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

It is a cyclic number.

It is not a de Polignac number, because 505839 - 2⁴ = 505823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3597 + ... + 3734.

It is an arithmetic number, because the mean of its divisors is an integer number (87984).

2⁵⁰⁵⁸³⁹ is an apocalyptic number.

505839 is a deficient number, since it is larger than the sum of its proper divisors (198033).

505839 is a wasteful number, since it uses less digits than its factorization.

505839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7357.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 505839 is about 711.2235935344. The cubic root of 505839 is about 79.6778188162.

The spelling of 505839 in words is "five hundred five thousand, eight hundred thirty-nine".