830009 has 4 divisors (see below), whose sum is σ = 858660. Its totient is φ = 801360.

The previous prime is 830003. The next prime is 830017. The reversal of 830009 is 900038.

830009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900038 = 2 ⋅450019.

It can be written as a sum of positive squares in 2 ways, for example, as 157609 + 672400 = 397^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 830009 - 2⁴ = 829993 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14282 + ... + 14339.

It is an arithmetic number, because the mean of its divisors is an integer number (214665).

2⁸³⁰⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

830009 is a deficient number, since it is larger than the sum of its proper divisors (28651).

830009 is a wasteful number, since it uses less digits than its factorization.

830009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28650.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 830009 is about 911.0482972927. The cubic root of 830009 is about 93.9783034277.

The spelling of 830009 in words is "eight hundred thirty thousand, nine".