809135 has 8 divisors (see below), whose sum is σ = 994896. Its totient is φ = 631360.

The previous prime is 809101. The next prime is 809141. The reversal of 809135 is 531908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 809135 - 2¹⁰ = 808111 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1769 + ... + 2178.

It is an arithmetic number, because the mean of its divisors is an integer number (124362).

2⁸⁰⁹¹³⁵ is an apocalyptic number.

809135 is a deficient number, since it is larger than the sum of its proper divisors (185761).

809135 is a wasteful number, since it uses less digits than its factorization.

809135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 809135 is about 899.5193160794. The cubic root of 809135 is about 93.1837811855.

The spelling of 809135 in words is "eight hundred nine thousand, one hundred thirty-five".