999900107 has 2 divisors, whose sum is σ = 999900108. Its totient is φ = 999900106.

The previous prime is 999900079. The next prime is 999900131. The reversal of 999900107 is 701009999.

It is a strong prime.

It is an emirp because it is prime and its reverse (701009999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999900107 - 2⁸ = 999899851 is a prime.

It is a super-2 number, since 2×999900107² = 1999600447957222898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999900157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499950053 + 499950054.

It is an arithmetic number, because the mean of its divisors is an integer number (499950054).

Almost surely, 2^999900107 is an apocalyptic number.

999900107 is a deficient number, since it is larger than the sum of its proper divisors (1).

999900107 is an equidigital number, since it uses as much as digits as its factorization.

999900107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 999900107 is about 31621.1971152264. The cubic root of 999900107 is about 999.9667012245.

The spelling of 999900107 in words is "nine hundred ninety-nine million, nine hundred thousand, one hundred seven".