19996297 has 2 divisors, whose sum is σ = 19996298. Its totient is φ = 19996296.

The previous prime is 19996279. The next prime is 19996313. The reversal of 19996297 is 79269991.

Together with previous prime (19996279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19971961 + 24336 = 4469^2 + 156^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19996297 is a prime.

It is not a weakly prime, because it can be changed into another prime (19996597) 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, 9998148 + 9998149.

It is an arithmetic number, because the mean of its divisors is an integer number (9998149).

Almost surely, 2^19996297 is an apocalyptic number.

It is an amenable number.

19996297 is a deficient number, since it is larger than the sum of its proper divisors (1).

19996297 is an equidigital number, since it uses as much as digits as its factorization.

19996297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 52.

The square root of 19996297 is about 4471.7219278484. The cubic root of 19996297 is about 271.4250081448.

The spelling of 19996297 in words is "nineteen million, nine hundred ninety-six thousand, two hundred ninety-seven".