68392899 has 12 divisors (see below), whose sum is σ = 98909200. Its totient is φ = 45540144.

The previous prime is 68392867. The next prime is 68392901. The reversal of 68392899 is 99829386.

It is a Cunningham number, because it is equal to 8270²-1.

It is not a de Polignac number, because 68392899 - 2⁵ = 68392867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68392829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4137 + ... + 12405.

Almost surely, 2^68392899 is an apocalyptic number.

68392899 is a deficient number, since it is larger than the sum of its proper divisors (30516301).

68392899 is a wasteful number, since it uses less digits than its factorization.

68392899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194 (or 9191 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 68392899 is about 8269.9999395405. Note that the first 4 decimals coincide. The cubic root of 68392899 is about 408.9501177600.

The spelling of 68392899 in words is "sixty-eight million, three hundred ninety-two thousand, eight hundred ninety-nine".