999408806 has 16 divisors (see below), whose sum is σ = 1635897168. Its totient is φ = 454137600.

The previous prime is 999408803. The next prime is 999408821. The reversal of 999408806 is 608804999.

999408806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999408803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110786 + ... + 119466.

It is an arithmetic number, because the mean of its divisors is an integer number (102243573).

Almost surely, 2^999408806 is an apocalyptic number.

999408806 is a deficient number, since it is larger than the sum of its proper divisors (636488362).

999408806 is a wasteful number, since it uses less digits than its factorization.

999408806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13927.

The product of its (nonzero) digits is 1119744, while the sum is 53.

The square root of 999408806 is about 31613.4276218192. The cubic root of 999408806 is about 999.8028964861.

The spelling of 999408806 in words is "nine hundred ninety-nine million, four hundred eight thousand, eight hundred six".