197979222 has 16 divisors (see below), whose sum is σ = 452524032. Its totient is φ = 56565480.

The previous prime is 197979209. The next prime is 197979227. The reversal of 197979222 is 222979791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197979227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2356854 + ... + 2356937.

It is an arithmetic number, because the mean of its divisors is an integer number (28282752).

Almost surely, 2^197979222 is an apocalyptic number.

197979222 is an abundant number, since it is smaller than the sum of its proper divisors (254544810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197979222 is a wasteful number, since it uses less digits than its factorization.

197979222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713803.

The product of its digits is 285768, while the sum is 48.

The square root of 197979222 is about 14070.5089460190. The cubic root of 197979222 is about 582.8272797182.

The spelling of 197979222 in words is "one hundred ninety-seven million, nine hundred seventy-nine thousand, two hundred twenty-two".