999394888 has 16 divisors (see below), whose sum is σ = 1875667500. Its totient is φ = 499216896.

The previous prime is 999394867. The next prime is 999394909. The reversal of 999394888 is 888493999.

It is an interprime number because it is at equal distance from previous prime (999394867) and next prime (999394909).

It can be written as a sum of positive squares in 2 ways, for example, as 674025444 + 325369444 = 25962^2 + 18038^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51153 + ... + 67936.

Almost surely, 2^999394888 is an apocalyptic number.

It is an amenable number.

999394888 is a deficient number, since it is larger than the sum of its proper divisors (876272612).

999394888 is a wasteful number, since it uses less digits than its factorization.

999394888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120144 (or 120140 counting only the distinct ones).

The product of its digits is 40310784, while the sum is 67.

The square root of 999394888 is about 31613.2074930716. The cubic root of 999394888 is about 999.7982553018.

The spelling of 999394888 in words is "nine hundred ninety-nine million, three hundred ninety-four thousand, eight hundred eighty-eight".