199140217 has 2 divisors, whose sum is σ = 199140218. Its totient is φ = 199140216.

The previous prime is 199140211. The next prime is 199140223. The reversal of 199140217 is 712041991.

It is a balanced prime because it is at equal distance from previous prime (199140211) and next prime (199140223).

It can be written as a sum of positive squares in only one way, i.e., 121418361 + 77721856 = 11019^2 + 8816^2 .

It is a cyclic number.

It is not a de Polignac number, because 199140217 - 2⁷ = 199140089 is a prime.

It is not a weakly prime, because it can be changed into another prime (199140211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99570108 + 99570109.

It is an arithmetic number, because the mean of its divisors is an integer number (99570109).

Almost surely, 2^199140217 is an apocalyptic number.

It is an amenable number.

199140217 is a deficient number, since it is larger than the sum of its proper divisors (1).

199140217 is an equidigital number, since it uses as much as digits as its factorization.

199140217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 199140217 is about 14111.7049643195. The cubic root of 199140217 is about 583.9643370119.

The spelling of 199140217 in words is "one hundred ninety-nine million, one hundred forty thousand, two hundred seventeen".