9909999067 has 2 divisors, whose sum is σ = 9909999068. Its totient is φ = 9909999066.

The previous prime is 9909999037. The next prime is 9909999109. The reversal of 9909999067 is 7609999099.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9909999067 - 2²⁷ = 9775781339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9909998993 and 9909999011.

It is not a weakly prime, because it can be changed into another prime (9909999037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954999533 + 4954999534.

It is an arithmetic number, because the mean of its divisors is an integer number (4954999534).

Almost surely, 2^9909999067 is an apocalyptic number.

9909999067 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909999067 is an equidigital number, since it uses as much as digits as its factorization.

9909999067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22320522, while the sum is 67.

The square root of 9909999067 is about 99548.9782318232. The cubic root of 9909999067 is about 2147.9518311065.

The spelling of 9909999067 in words is "nine billion, nine hundred nine million, nine hundred ninety-nine thousand, sixty-seven".