19996927 has 2 divisors, whose sum is σ = 19996928. Its totient is φ = 19996926.

The previous prime is 19996871. The next prime is 19996961. The reversal of 19996927 is 72969991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19996927 - 2¹¹ = 19994879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19993927) 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, 9998463 + 9998464.

It is an arithmetic number, because the mean of its divisors is an integer number (9998464).

Almost surely, 2^19996927 is an apocalyptic number.

19996927 is a deficient number, since it is larger than the sum of its proper divisors (1).

19996927 is an equidigital number, since it uses as much as digits as its factorization.

19996927 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 19996927 is about 4471.7923699564. The cubic root of 19996927 is about 271.4278586052.

The spelling of 19996927 in words is "nineteen million, nine hundred ninety-six thousand, nine hundred twenty-seven".