197260289 has 2 divisors, whose sum is σ = 197260290. Its totient is φ = 197260288.

The previous prime is 197260279. The next prime is 197260303. The reversal of 197260289 is 982062791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130347889 + 66912400 = 11417^2 + 8180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197260289 is a prime.

It is not a weakly prime, because it can be changed into another prime (197260229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98630144 + 98630145.

It is an arithmetic number, because the mean of its divisors is an integer number (98630145).

Almost surely, 2^197260289 is an apocalyptic number.

It is an amenable number.

197260289 is a deficient number, since it is larger than the sum of its proper divisors (1).

197260289 is an equidigital number, since it uses as much as digits as its factorization.

197260289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 197260289 is about 14044.9381985112. The cubic root of 197260289 is about 582.1209396249.

The spelling of 197260289 in words is "one hundred ninety-seven million, two hundred sixty thousand, two hundred eighty-nine".