999405882 has 24 divisors (see below), whose sum is σ = 2179725600. Its totient is φ = 330928200.

The previous prime is 999405881. The next prime is 999405907. The reversal of 999405882 is 288504999.

It is not an unprimeable number, because it can be changed into a prime (999405881) 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 in 11 ways as a sum of consecutive naturals, for example, 181132 + ... + 186567.

It is an arithmetic number, because the mean of its divisors is an integer number (90821900).

Almost surely, 2^999405882 is an apocalyptic number.

999405882 is an abundant number, since it is smaller than the sum of its proper divisors (1180319718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999405882 is a wasteful number, since it uses less digits than its factorization.

999405882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367858 (or 367855 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 999405882 is about 31613.3813756137. The cubic root of 999405882 is about 999.8019214341.

The spelling of 999405882 in words is "nine hundred ninety-nine million, four hundred five thousand, eight hundred eighty-two".