809538 has 8 divisors (see below), whose sum is σ = 1619088. Its totient is φ = 269844.

The previous prime is 809527. The next prime is 809563. The reversal of 809538 is 835908.

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

809538 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 809499 and 809508.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67456 + ... + 67467.

It is an arithmetic number, because the mean of its divisors is an integer number (202386).

2⁸⁰⁹⁵³⁸ is an apocalyptic number.

809538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809538 is a wasteful number, since it uses less digits than its factorization.

809538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134928.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 809538 is about 899.7432967241. The cubic root of 809538 is about 93.1992490745.

The spelling of 809538 in words is "eight hundred nine thousand, five hundred thirty-eight".