809950 has 24 divisors (see below), whose sum is σ = 1531152. Its totient is φ = 318720.

The previous prime is 809929. The next prime is 809981. The reversal of 809950 is 59908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4767 + ... + 4933.

It is an arithmetic number, because the mean of its divisors is an integer number (63798).

2⁸⁰⁹⁹⁵⁰ is an apocalyptic number.

809950 is a deficient number, since it is larger than the sum of its proper divisors (721202).

809950 is a wasteful number, since it uses less digits than its factorization.

809950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 809950 is about 899.9722217935. The cubic root of 809950 is about 93.2150570944.

The spelling of 809950 in words is "eight hundred nine thousand, nine hundred fifty".