838505 has 8 divisors (see below), whose sum is σ = 1021632. Its totient is φ = 660528.

The previous prime is 838483. The next prime is 838517. The reversal of 838505 is 505838.

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 838505 - 2⁶ = 838441 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838505.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 917 + ... + 1586.

It is an arithmetic number, because the mean of its divisors is an integer number (127704).

2⁸³⁸⁵⁰⁵ is an apocalyptic number.

It is an amenable number.

838505 is a deficient number, since it is larger than the sum of its proper divisors (183127).

838505 is a wasteful number, since it uses less digits than its factorization.

838505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2575.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 838505 is about 915.6991864144. The cubic root of 838505 is about 94.2978705521.

The spelling of 838505 in words is "eight hundred thirty-eight thousand, five hundred five".