847385 has 32 divisors (see below), whose sum is σ = 1327104. Its totient is φ = 504000.

The previous prime is 847373. The next prime is 847393. The reversal of 847385 is 583748.

It is not a de Polignac number, because 847385 - 2⁶ = 847321 is a prime.

It is a super-2 number, since 2×847385² = 1436122676450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an Ulam number.

It is a d-powerful number, because it can be written as 8⁴ + 4² + 3² + 7⁷ + 8⁴ + 5⁶ .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 847385.

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 31 ways as a sum of consecutive naturals, for example, 11900 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (41472).

2⁸⁴⁷³⁸⁵ is an apocalyptic number.

It is an amenable number.

847385 is a deficient number, since it is larger than the sum of its proper divisors (479719).

847385 is a wasteful number, since it uses less digits than its factorization.

847385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125.

The product of its digits is 26880, while the sum is 35.

The square root of 847385 is about 920.5351704308. The cubic root of 847385 is about 94.6295825014.

It can be divided in two parts, 8473 and 85, that added together give a palindrome (8558).

The spelling of 847385 in words is "eight hundred forty-seven thousand, three hundred eighty-five".