822199878 has 12 divisors (see below), whose sum is σ = 1781433108. Its totient is φ = 274066620.

The previous prime is 822199867. The next prime is 822199927. The reversal of 822199878 is 878991228.

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 5 ways as a sum of consecutive naturals, for example, 22838868 + ... + 22838903.

It is an arithmetic number, because the mean of its divisors is an integer number (148452759).

Almost surely, 2^822199878 is an apocalyptic number.

822199878 is an abundant number, since it is smaller than the sum of its proper divisors (959233230).

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

822199878 is a wasteful number, since it uses less digits than its factorization.

822199878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45677779 (or 45677776 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 822199878 is about 28674.0279347008. The cubic root of 822199878 is about 936.8264328704.

The spelling of 822199878 in words is "eight hundred twenty-two million, one hundred ninety-nine thousand, eight hundred seventy-eight".