999999105 has 48 divisors (see below), whose sum is σ = 1882258560. Its totient is φ = 451976448.

The previous prime is 999999103. The next prime is 999999107. The reversal of 999999105 is 501999999.

999999105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (999999103) and next prime (999999107).

It is not a de Polignac number, because 999999105 - 2¹ = 999999103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999999103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57772 + ... + 73058.

It is an arithmetic number, because the mean of its divisors is an integer number (39213720).

Almost surely, 2^999999105 is an apocalyptic number.

It is an amenable number.

999999105 is a deficient number, since it is larger than the sum of its proper divisors (882259455).

999999105 is a wasteful number, since it uses less digits than its factorization.

999999105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15398 (or 15391 counting only the distinct ones).

The product of its (nonzero) digits is 2657205, while the sum is 60.

The square root of 999999105 is about 31622.7624504881. The cubic root of 999999105 is about 999.9997016666. Note that the first 3 decimals are identical.

The spelling of 999999105 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred five".