197201089 has 2 divisors, whose sum is σ = 197201090. Its totient is φ = 197201088.

The previous prime is 197201063. The next prime is 197201101. The reversal of 197201089 is 980102791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177023025 + 20178064 = 13305^2 + 4492^2 .

It is a cyclic number.

It is not a de Polignac number, because 197201089 - 2⁷ = 197200961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197201789) by changing a digit.

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 as a sum of consecutive naturals, namely, 98600544 + 98600545.

It is an arithmetic number, because the mean of its divisors is an integer number (98600545).

Almost surely, 2^197201089 is an apocalyptic number.

It is an amenable number.

197201089 is a deficient number, since it is larger than the sum of its proper divisors (1).

197201089 is an equidigital number, since it uses as much as digits as its factorization.

197201089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 197201089 is about 14042.8305195213. The cubic root of 197201089 is about 582.0627001489.

The spelling of 197201089 in words is "one hundred ninety-seven million, two hundred one thousand, eighty-nine".