999309107 has 2 divisors, whose sum is σ = 999309108. Its totient is φ = 999309106.

The previous prime is 999309089. The next prime is 999309139. The reversal of 999309107 is 701903999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999309107 - 2⁶ = 999309043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999309187) 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, 499654553 + 499654554.

It is an arithmetic number, because the mean of its divisors is an integer number (499654554).

Almost surely, 2^999309107 is an apocalyptic number.

999309107 is a deficient number, since it is larger than the sum of its proper divisors (1).

999309107 is an equidigital number, since it uses as much as digits as its factorization.

999309107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137781, while the sum is 47.

The square root of 999309107 is about 31611.8507367095. The cubic root of 999309107 is about 999.7696492760.

The spelling of 999309107 in words is "nine hundred ninety-nine million, three hundred nine thousand, one hundred seven".