829385 has 4 divisors (see below), whose sum is σ = 995268. Its totient is φ = 663504.

The previous prime is 829349. The next prime is 829399. The reversal of 829385 is 583928.

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

It can be written as a sum of positive squares in 2 ways, for example, as 446224 + 383161 = 668^2 + 619^2 .

It is a cyclic number.

It is not a de Polignac number, because 829385 - 2¹⁰ = 828361 is a prime.

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 829385.

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, 82934 + ... + 82943.

It is an arithmetic number, because the mean of its divisors is an integer number (248817).

2⁸²⁹³⁸⁵ is an apocalyptic number.

It is an amenable number.

829385 is a deficient number, since it is larger than the sum of its proper divisors (165883).

829385 is a wasteful number, since it uses less digits than its factorization.

829385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165882.

The product of its digits is 17280, while the sum is 35.

The square root of 829385 is about 910.7057702683. The cubic root of 829385 is about 93.9547465894.

The spelling of 829385 in words is "eight hundred twenty-nine thousand, three hundred eighty-five".