198696943 has 2 divisors, whose sum is σ = 198696944. Its totient is φ = 198696942.

The previous prime is 198696881. The next prime is 198696989. The reversal of 198696943 is 349696891.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198696943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198696343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99348471 + 99348472.

It is an arithmetic number, because the mean of its divisors is an integer number (99348472).

Almost surely, 2^198696943 is an apocalyptic number.

198696943 is a deficient number, since it is larger than the sum of its proper divisors (1).

198696943 is an equidigital number, since it uses as much as digits as its factorization.

198696943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 55.

The square root of 198696943 is about 14095.9903163985. The cubic root of 198696943 is about 583.5307254335.

The spelling of 198696943 in words is "one hundred ninety-eight million, six hundred ninety-six thousand, nine hundred forty-three".