198976808 has 8 divisors (see below), whose sum is σ = 373081530. Its totient is φ = 99488400.

The previous prime is 198976807. The next prime is 198976819. The reversal of 198976808 is 808679891.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 151339204 + 47637604 = 12302^2 + 6902^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (198976807) by changing a digit.

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 as a sum of consecutive naturals, namely, 12436043 + ... + 12436058.

Almost surely, 2^198976808 is an apocalyptic number.

It is an amenable number.

198976808 is a deficient number, since it is larger than the sum of its proper divisors (174104722).

198976808 is a wasteful number, since it uses less digits than its factorization.

198976808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24872107 (or 24872103 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 56.

The square root of 198976808 is about 14105.9139370691. The cubic root of 198976808 is about 583.8045649298.

The spelling of 198976808 in words is "one hundred ninety-eight million, nine hundred seventy-six thousand, eight hundred eight".