19968947 has 2 divisors, whose sum is σ = 19968948. Its totient is φ = 19968946.

The previous prime is 19968941. The next prime is 19968953. The reversal of 19968947 is 74986991.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (19968941) and next prime (19968953).

It is a cyclic number.

It is not a de Polignac number, because 19968947 - 2¹⁸ = 19706803 is a prime.

It is not a weakly prime, because it can be changed into another prime (19968941) 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, 9984473 + 9984474.

It is an arithmetic number, because the mean of its divisors is an integer number (9984474).

Almost surely, 2^19968947 is an apocalyptic number.

19968947 is a deficient number, since it is larger than the sum of its proper divisors (1).

19968947 is an equidigital number, since it uses as much as digits as its factorization.

19968947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 53.

The square root of 19968947 is about 4468.6627753725. The cubic root of 19968947 is about 271.3012042051.

The spelling of 19968947 in words is "nineteen million, nine hundred sixty-eight thousand, nine hundred forty-seven".