838385 has 4 divisors (see below), whose sum is σ = 1006068. Its totient is φ = 670704.

The previous prime is 838379. The next prime is 838391. The reversal of 838385 is 583838.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (838379) and next prime (838391).

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 614656 = 473^2 + 784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838385 is a prime.

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

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 838385.

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 3 ways as a sum of consecutive naturals, for example, 83834 + ... + 83843.

It is an arithmetic number, because the mean of its divisors is an integer number (251517).

2⁸³⁸³⁸⁵ is an apocalyptic number.

It is an amenable number.

838385 is a deficient number, since it is larger than the sum of its proper divisors (167683).

838385 is a wasteful number, since it uses less digits than its factorization.

838385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167682.

The product of its digits is 23040, while the sum is 35.

The square root of 838385 is about 915.6336603686. The cubic root of 838385 is about 94.2933719566.

The spelling of 838385 in words is "eight hundred thirty-eight thousand, three hundred eighty-five".