999944888 has 8 divisors (see below), whose sum is σ = 1874896680. Its totient is φ = 499972440.

The previous prime is 999944887. The next prime is 999944899. The reversal of 999944888 is 888449999.

It is a tau number, because it is divible by the number of its divisors (8).

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999944887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62496548 + ... + 62496563.

It is an arithmetic number, because the mean of its divisors is an integer number (234362085).

Almost surely, 2^999944888 is an apocalyptic number.

It is an amenable number.

999944888 is a deficient number, since it is larger than the sum of its proper divisors (874951792).

999944888 is a wasteful number, since it uses less digits than its factorization.

999944888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124993117 (or 124993113 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 68.

The square root of 999944888 is about 31621.9051924453. The cubic root of 999944888 is about 999.9816289958.

The spelling of 999944888 in words is "nine hundred ninety-nine million, nine hundred forty-four thousand, eight hundred eighty-eight".