198479107 has 2 divisors, whose sum is σ = 198479108. Its totient is φ = 198479106.

The previous prime is 198479101. The next prime is 198479123. The reversal of 198479107 is 701974891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198479107 - 2¹⁹ = 197954819 is a prime.

It is not a weakly prime, because it can be changed into another prime (198479101) 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, 99239553 + 99239554.

It is an arithmetic number, because the mean of its divisors is an integer number (99239554).

Almost surely, 2^198479107 is an apocalyptic number.

198479107 is a deficient number, since it is larger than the sum of its proper divisors (1).

198479107 is an equidigital number, since it uses as much as digits as its factorization.

198479107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 198479107 is about 14088.2613192686. The cubic root of 198479107 is about 583.3174014334.

The spelling of 198479107 in words is "one hundred ninety-eight million, four hundred seventy-nine thousand, one hundred seven".