999992867 has 2 divisors, whose sum is σ = 999992868. Its totient is φ = 999992866.

The previous prime is 999992837. The next prime is 999992891. The reversal of 999992867 is 768299999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999992867 - 2¹⁰ = 999991843 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 999992797 and 999992806.

It is not a weakly prime, because it can be changed into another prime (999992837) 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, 499996433 + 499996434.

It is an arithmetic number, because the mean of its divisors is an integer number (499996434).

Almost surely, 2^999992867 is an apocalyptic number.

999992867 is a deficient number, since it is larger than the sum of its proper divisors (1).

999992867 is an equidigital number, since it uses as much as digits as its factorization.

999992867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39680928, while the sum is 68.

The square root of 999992867 is about 31622.6638188499. The cubic root of 999992867 is about 999.9976223277.

The spelling of 999992867 in words is "nine hundred ninety-nine million, nine hundred ninety-two thousand, eight hundred sixty-seven".