838785 has 16 divisors (see below), whose sum is σ = 1353600. Its totient is φ = 443520.

The previous prime is 838781. The next prime is 838807. The reversal of 838785 is 587838.

It is not a de Polignac number, because 838785 - 2² = 838781 is a prime.

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

838785 is a lucky number.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838785.

It is not an unprimeable number, because it can be changed into a prime (838781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2845 + ... + 3125.

It is an arithmetic number, because the mean of its divisors is an integer number (84600).

2⁸³⁸⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

838785 is a deficient number, since it is larger than the sum of its proper divisors (514815).

838785 is a wasteful number, since it uses less digits than its factorization.

838785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488.

The product of its digits is 53760, while the sum is 39.

The square root of 838785 is about 915.8520622895. The cubic root of 838785 is about 94.3083656059.

The spelling of 838785 in words is "eight hundred thirty-eight thousand, seven hundred eighty-five".