197223889 has 2 divisors, whose sum is σ = 197223890. Its totient is φ = 197223888.

The previous prime is 197223883. The next prime is 197223937. The reversal of 197223889 is 988322791.

197223889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118635664 + 78588225 = 10892^2 + 8865^2 .

It is a cyclic number.

It is not a de Polignac number, because 197223889 - 2¹⁷ = 197092817 is a prime.

It is not a weakly prime, because it can be changed into another prime (197223883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98611944 + 98611945.

It is an arithmetic number, because the mean of its divisors is an integer number (98611945).

Almost surely, 2^197223889 is an apocalyptic number.

It is an amenable number.

197223889 is a deficient number, since it is larger than the sum of its proper divisors (1).

197223889 is an equidigital number, since it uses as much as digits as its factorization.

197223889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 49.

The square root of 197223889 is about 14043.6422982074. The cubic root of 197223889 is about 582.0851315973.

The spelling of 197223889 in words is "one hundred ninety-seven million, two hundred twenty-three thousand, eight hundred eighty-nine".