190996217 has 2 divisors, whose sum is σ = 190996218. Its totient is φ = 190996216.

The previous prime is 190996199. The next prime is 190996229. The reversal of 190996217 is 712699091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169937296 + 21058921 = 13036^2 + 4589^2 .

It is a cyclic number.

It is not a de Polignac number, because 190996217 - 2¹⁰ = 190995193 is a prime.

It is a super-2 number, since 2×190996217² = 72959109816622178, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190996237) 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 as a sum of consecutive naturals, namely, 95498108 + 95498109.

It is an arithmetic number, because the mean of its divisors is an integer number (95498109).

Almost surely, 2^190996217 is an apocalyptic number.

It is an amenable number.

190996217 is a deficient number, since it is larger than the sum of its proper divisors (1).

190996217 is an equidigital number, since it uses as much as digits as its factorization.

190996217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 44.

The square root of 190996217 is about 13820.1380962710. The cubic root of 190996217 is about 575.8927199010.

The spelling of 190996217 in words is "one hundred ninety million, nine hundred ninety-six thousand, two hundred seventeen".