835009 has 6 divisors (see below), whose sum is σ = 971394. Its totient is φ = 715680.

The previous prime is 835001. The next prime is 835013. The reversal of 835009 is 900538.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 19600 = 903^2 + 140^2 .

It is not a de Polignac number, because 835009 - 2³ = 835001 is a prime.

It is an Ulam number.

It is a Duffinian number.

835009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (835001) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 8472 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (161899).

2⁸³⁵⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

835009 is a deficient number, since it is larger than the sum of its proper divisors (136385).

835009 is a wasteful number, since it uses less digits than its factorization.

835009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17055 (or 17048 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 835009 is about 913.7882686925. The cubic root of 835009 is about 94.1666351668.

The spelling of 835009 in words is "eight hundred thirty-five thousand, nine".