999606384 has 120 divisors (see below), whose sum is σ = 3206422752. Its totient is φ = 284774400.

The previous prime is 999606371. The next prime is 999606431. The reversal of 999606384 is 483606999.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 999606384.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 402972 + ... + 405444.

Almost surely, 2^999606384 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 999606384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1603211376).

999606384 is an abundant number, since it is smaller than the sum of its proper divisors (2206816368).

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

999606384 is a wasteful number, since it uses less digits than its factorization.

999606384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 999606384 is about 31616.5523737172. The cubic root of 999606384 is about 999.8687774481.

The spelling of 999606384 in words is "nine hundred ninety-nine million, six hundred six thousand, three hundred eighty-four".