68389199 has 2 divisors, whose sum is σ = 68389200. Its totient is φ = 68389198.

The previous prime is 68389187. The next prime is 68389207. The reversal of 68389199 is 99198386.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68389199 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68389199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68389129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34194599 + 34194600.

It is an arithmetic number, because the mean of its divisors is an integer number (34194600).

Almost surely, 2^68389199 is an apocalyptic number.

68389199 is a deficient number, since it is larger than the sum of its proper divisors (1).

68389199 is an equidigital number, since it uses as much as digits as its factorization.

68389199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 53.

The square root of 68389199 is about 8269.7762363924. The cubic root of 68389199 is about 408.9427430046.

The spelling of 68389199 in words is "sixty-eight million, three hundred eighty-nine thousand, one hundred ninety-nine".