197961212 has 12 divisors (see below), whose sum is σ = 349862856. Its totient is φ = 98000400.

The previous prime is 197961191. The next prime is 197961217. The reversal of 197961212 is 212169791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197961217) 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 3 ways as a sum of consecutive naturals, for example, 244598 + ... + 245405.

It is an arithmetic number, because the mean of its divisors is an integer number (29155238).

Almost surely, 2^197961212 is an apocalyptic number.

It is an amenable number.

197961212 is a deficient number, since it is larger than the sum of its proper divisors (151901644).

197961212 is a wasteful number, since it uses less digits than its factorization.

197961212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490108 (or 490106 counting only the distinct ones).

The product of its digits is 13608, while the sum is 38.

The square root of 197961212 is about 14069.8689403988. The cubic root of 197961212 is about 582.8096060831.

The spelling of 197961212 in words is "one hundred ninety-seven million, nine hundred sixty-one thousand, two hundred twelve".