809860196 has 24 divisors (see below), whose sum is σ = 1471962240. Its totient is φ = 389592032.

The previous prime is 809860187. The next prime is 809860201. The reversal of 809860196 is 691068908.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 809860196.

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 7 ways as a sum of consecutive naturals, for example, 25415 + ... + 47598.

It is an arithmetic number, because the mean of its divisors is an integer number (61331760).

Almost surely, 2^809860196 is an apocalyptic number.

It is an amenable number.

809860196 is a deficient number, since it is larger than the sum of its proper divisors (662102044).

809860196 is a wasteful number, since it uses less digits than its factorization.

809860196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73123 (or 73121 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 809860196 is about 28458.0427296046. The cubic root of 809860196 is about 932.1161186346.

The spelling of 809860196 in words is "eight hundred nine million, eight hundred sixty thousand, one hundred ninety-six".