197448689 has 2 divisors, whose sum is σ = 197448690. Its totient is φ = 197448688.

The previous prime is 197448683. The next prime is 197448697. The reversal of 197448689 is 986844791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195077089 + 2371600 = 13967^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 197448689 - 2⁴ = 197448673 is a prime.

It is not a weakly prime, because it can be changed into another prime (197448683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98724344 + 98724345.

It is an arithmetic number, because the mean of its divisors is an integer number (98724345).

Almost surely, 2^197448689 is an apocalyptic number.

It is an amenable number.

197448689 is a deficient number, since it is larger than the sum of its proper divisors (1).

197448689 is an equidigital number, since it uses as much as digits as its factorization.

197448689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The square root of 197448689 is about 14051.6436405141. The cubic root of 197448689 is about 582.3062053111.

The spelling of 197448689 in words is "one hundred ninety-seven million, four hundred forty-eight thousand, six hundred eighty-nine".