19714397 has 2 divisors, whose sum is σ = 19714398. Its totient is φ = 19714396.

The previous prime is 19714379. The next prime is 19714411. The reversal of 19714397 is 79341791.

Together with previous prime (19714379) 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., 19175641 + 538756 = 4379^2 + 734^2 .

It is an emirp because it is prime and its reverse (79341791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19714397 - 2¹⁰ = 19713373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19714297) 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 as a sum of consecutive naturals, namely, 9857198 + 9857199.

It is an arithmetic number, because the mean of its divisors is an integer number (9857199).

Almost surely, 2^19714397 is an apocalyptic number.

It is an amenable number.

19714397 is a deficient number, since it is larger than the sum of its proper divisors (1).

19714397 is an equidigital number, since it uses as much as digits as its factorization.

19714397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 41.

The square root of 19714397 is about 4440.0897513451. The cubic root of 19714397 is about 270.1434856911.

The spelling of 19714397 in words is "nineteen million, seven hundred fourteen thousand, three hundred ninety-seven".