196419917 has 2 divisors, whose sum is σ = 196419918. Its totient is φ = 196419916.

The previous prime is 196419913. The next prime is 196419919. The reversal of 196419917 is 719914691.

196419917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178997641 + 17422276 = 13379^2 + 4174^2 .

It is a cyclic number.

It is not a de Polignac number, because 196419917 - 2² = 196419913 is a prime.

Together with 196419919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196419911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98209958 + 98209959.

It is an arithmetic number, because the mean of its divisors is an integer number (98209959).

Almost surely, 2^196419917 is an apocalyptic number.

It is an amenable number.

196419917 is a deficient number, since it is larger than the sum of its proper divisors (1).

196419917 is an equidigital number, since it uses as much as digits as its factorization.

196419917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 47.

The square root of 196419917 is about 14014.9890117688. The cubic root of 196419917 is about 581.2931087309.

The spelling of 196419917 in words is "one hundred ninety-six million, four hundred nineteen thousand, nine hundred seventeen".