197442297 has 24 divisors (see below), whose sum is σ = 311353224. Its totient is φ = 119833344.

The previous prime is 197442293. The next prime is 197442341. The reversal of 197442297 is 792244791.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4260096 + 193182201 = 2064^2 + 13899^2 .

It is not a de Polignac number, because 197442297 - 2² = 197442293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197442293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3018 + ... + 20099.

It is an arithmetic number, because the mean of its divisors is an integer number (12973051).

Almost surely, 2^197442297 is an apocalyptic number.

It is an amenable number.

197442297 is a deficient number, since it is larger than the sum of its proper divisors (113910927).

197442297 is a wasteful number, since it uses less digits than its factorization.

197442297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23209 (or 23206 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 197442297 is about 14051.4161919715. The cubic root of 197442297 is about 582.2999215833.

The spelling of 197442297 in words is "one hundred ninety-seven million, four hundred forty-two thousand, two hundred ninety-seven".