197950099 has 2 divisors, whose sum is σ = 197950100. Its totient is φ = 197950098.

The previous prime is 197950073. The next prime is 197950127. The reversal of 197950099 is 990059791.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197950099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (197950019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98975049 + 98975050.

It is an arithmetic number, because the mean of its divisors is an integer number (98975050).

Almost surely, 2^197950099 is an apocalyptic number.

197950099 is a deficient number, since it is larger than the sum of its proper divisors (1).

197950099 is an equidigital number, since it uses as much as digits as its factorization.

197950099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 229635, while the sum is 49.

The square root of 197950099 is about 14069.4740129118. The cubic root of 197950099 is about 582.7987001009.

The spelling of 197950099 in words is "one hundred ninety-seven million, nine hundred fifty thousand, ninety-nine".