9999999967 has 2 divisors, whose sum is σ = 9999999968. Its totient is φ = 9999999966.

The previous prime is 9999999943. The next prime is 10000000019. The reversal of 9999999967 is 7699999999.

It is a weak prime.

It is an emirp because it is prime and its reverse (7699999999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9999999967 - 2¹¹ = 9999997919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999999067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999999983 + 4999999984.

It is an arithmetic number, because the mean of its divisors is an integer number (4999999984).

Almost surely, 2^9999999967 is an apocalyptic number.

9999999967 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999999967 is an equidigital number, since it uses as much as digits as its factorization.

9999999967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1807962282, while the sum is 85.

The square root of 9999999967 is about 99999.9998350000. Note that the first 3 decimals coincide. The cubic root of 9999999967 is about 2154.4346876620.

The spelling of 9999999967 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred sixty-seven".