999784448 has 64 divisors (see below), whose sum is σ = 2154266520. Its totient is φ = 461242368.

The previous prime is 999784393. The next prime is 999784463. The reversal of 999784448 is 844487999.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424811 + ... + 427157.

Almost surely, 2^999784448 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 999784448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077133260).

999784448 is an abundant number, since it is smaller than the sum of its proper divisors (1154482072).

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

999784448 is an equidigital number, since it uses as much as digits as its factorization.

999784448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390 (or 2362 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 62.

The square root of 999784448 is about 31619.3682416332. The cubic root of 999784448 is about 999.9281441702.

The spelling of 999784448 in words is "nine hundred ninety-nine million, seven hundred eighty-four thousand, four hundred forty-eight".