19968079 has 2 divisors, whose sum is σ = 19968080. Its totient is φ = 19968078.

The previous prime is 19968041. The next prime is 19968097. The reversal of 19968079 is 97086991.

Together with next prime (19968097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19968079 - 2¹¹ = 19966031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19968029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9984039 + 9984040.

It is an arithmetic number, because the mean of its divisors is an integer number (9984040).

Almost surely, 2^19968079 is an apocalyptic number.

19968079 is a deficient number, since it is larger than the sum of its proper divisors (1).

19968079 is an equidigital number, since it uses as much as digits as its factorization.

19968079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 19968079 is about 4468.5656535403. The cubic root of 19968079 is about 271.2972732207.

The spelling of 19968079 in words is "nineteen million, nine hundred sixty-eight thousand, seventy-nine".