198822879 has 12 divisors (see below), whose sum is σ = 299675376. Its totient is φ = 126785472.

The previous prime is 198822853. The next prime is 198822881. The reversal of 198822879 is 978228891.

It is not a de Polignac number, because 198822879 - 2⁷ = 198822751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198822829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480042 + ... + 480455.

It is an arithmetic number, because the mean of its divisors is an integer number (24972948).

Almost surely, 2^198822879 is an apocalyptic number.

198822879 is a deficient number, since it is larger than the sum of its proper divisors (100852497).

198822879 is a wasteful number, since it uses less digits than its factorization.

198822879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960526 (or 960523 counting only the distinct ones).

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

The square root of 198822879 is about 14100.4566947316. The cubic root of 198822879 is about 583.6539818260.

The spelling of 198822879 in words is "one hundred ninety-eight million, eight hundred twenty-two thousand, eight hundred seventy-nine".