19799627 has 2 divisors, whose sum is σ = 19799628. Its totient is φ = 19799626.

The previous prime is 19799623. The next prime is 19799629. The reversal of 19799627 is 72699791.

It is a strong prime.

It is an emirp because it is prime and its reverse (72699791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19799627 - 2² = 19799623 is a prime.

Together with 19799629, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19799623) 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, 9899813 + 9899814.

It is an arithmetic number, because the mean of its divisors is an integer number (9899814).

Almost surely, 2^19799627 is an apocalyptic number.

19799627 is a deficient number, since it is larger than the sum of its proper divisors (1).

19799627 is an equidigital number, since it uses as much as digits as its factorization.

19799627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 50.

The square root of 19799627 is about 4449.6771793019. The cubic root of 19799627 is about 270.5322240816.

The spelling of 19799627 in words is "nineteen million, seven hundred ninety-nine thousand, six hundred twenty-seven".