199930097 has 2 divisors, whose sum is σ = 199930098. Its totient is φ = 199930096.

The previous prime is 199930079. The next prime is 199930111. The reversal of 199930097 is 790039991.

It is a happy number.

Together with previous prime (199930079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139027681 + 60902416 = 11791^2 + 7804^2 .

It is a cyclic number.

It is not a de Polignac number, because 199930097 - 2¹⁰ = 199929073 is a prime.

It is not a weakly prime, because it can be changed into another prime (199932097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99965048 + 99965049.

It is an arithmetic number, because the mean of its divisors is an integer number (99965049).

Almost surely, 2^199930097 is an apocalyptic number.

It is an amenable number.

199930097 is a deficient number, since it is larger than the sum of its proper divisors (1).

199930097 is an equidigital number, since it uses as much as digits as its factorization.

199930097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 199930097 is about 14139.6639634752. The cubic root of 199930097 is about 584.7354071659.

The spelling of 199930097 in words is "one hundred ninety-nine million, nine hundred thirty thousand, ninety-seven".