999928001296 has 135 divisors (see below), whose sum is σ = 2290406549223. Its totient is φ = 421664819520.

The previous prime is 999928001273. The next prime is 999928001321. The reversal of 999928001296 is 692100829999.

The square root of 999928001296 is 999964.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 1987928181 + ... + 1987928683.

Almost surely, 2^999928001296 is an apocalyptic number.

999928001296 is the 999964-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999928001296

999928001296 is an abundant number, since it is smaller than the sum of its proper divisors (1290478547927).

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

999928001296 is an frugal number, since it uses more digits than its factorization.

999928001296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 64.

Multiplying 999928001296 by its sum of digits (64), we get a square (63995392082944 = 7999712²).

The spelling of 999928001296 in words is "nine hundred ninety-nine billion, nine hundred twenty-eight million, one thousand, two hundred ninety-six".