196339993 has 2 divisors, whose sum is σ = 196339994. Its totient is φ = 196339992.

The previous prime is 196339943. The next prime is 196339999. The reversal of 196339993 is 399933691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165559689 + 30780304 = 12867^2 + 5548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-196339993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196339993.

It is not a weakly prime, because it can be changed into another prime (196339999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98169996 + 98169997.

It is an arithmetic number, because the mean of its divisors is an integer number (98169997).

Almost surely, 2^196339993 is an apocalyptic number.

It is an amenable number.

196339993 is a deficient number, since it is larger than the sum of its proper divisors (1).

196339993 is an equidigital number, since it uses as much as digits as its factorization.

196339993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1062882, while the sum is 52.

The square root of 196339993 is about 14012.1373458870. The cubic root of 196339993 is about 581.2142545868.

The spelling of 196339993 in words is "one hundred ninety-six million, three hundred thirty-nine thousand, nine hundred ninety-three".