999488672 has 72 divisors (see below), whose sum is σ = 2465135316. Its totient is φ = 395394048.

The previous prime is 999488657. The next prime is 999488717. The reversal of 999488672 is 276884999.

It can be written as a sum of positive squares in 2 ways, for example, as 875923216 + 123565456 = 29596^2 + 11116^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4133 + ... + 44900.

Almost surely, 2^999488672 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 999488672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1232567658).

999488672 is an abundant number, since it is smaller than the sum of its proper divisors (1465646644).

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

999488672 is a wasteful number, since it uses less digits than its factorization.

999488672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49070 (or 49055 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 62.

The square root of 999488672 is about 31614.6907623655. The cubic root of 999488672 is about 999.8295282744.

The spelling of 999488672 in words is "nine hundred ninety-nine million, four hundred eighty-eight thousand, six hundred seventy-two".