999982840 has 64 divisors (see below), whose sum is σ = 2390342400. Its totient is φ = 375195648.

The previous prime is 999982771. The next prime is 999982847. The reversal of 999982840 is 48289999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999982847) 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 15 ways as a sum of consecutive naturals, for example, 213241 + ... + 217879.

It is an arithmetic number, because the mean of its divisors is an integer number (37349100).

Almost surely, 2^999982840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999982840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195171200).

999982840 is an abundant number, since it is smaller than the sum of its proper divisors (1390359560).

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

999982840 is a wasteful number, since it uses less digits than its factorization.

999982840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984 (or 4980 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 58.

The square root of 999982840 is about 31622.5052770966. The cubic root of 999982840 is about 999.9942799673.

The spelling of 999982840 in words is "nine hundred ninety-nine million, nine hundred eighty-two thousand, eight hundred forty".