999455867 has 2 divisors, whose sum is σ = 999455868. Its totient is φ = 999455866.

The previous prime is 999455851. The next prime is 999455909. The reversal of 999455867 is 768554999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999455867 - 2⁴ = 999455851 is a prime.

It is not a weakly prime, because it can be changed into another prime (999455827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499727933 + 499727934.

It is an arithmetic number, because the mean of its divisors is an integer number (499727934).

Almost surely, 2^999455867 is an apocalyptic number.

999455867 is a deficient number, since it is larger than the sum of its proper divisors (1).

999455867 is an equidigital number, since it uses as much as digits as its factorization.

999455867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24494400, while the sum is 62.

The square root of 999455867 is about 31614.1719328532. The cubic root of 999455867 is about 999.8185894255.

The spelling of 999455867 in words is "nine hundred ninety-nine million, four hundred fifty-five thousand, eight hundred sixty-seven".