999040444 has 12 divisors (see below), whose sum is σ = 1840337800. Its totient is φ = 473229648.

The previous prime is 999040439. The next prime is 999040447. The reversal of 999040444 is 444040999.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 999040444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999040447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6572559 + ... + 6572710.

Almost surely, 2^999040444 is an apocalyptic number.

It is an amenable number.

999040444 is a deficient number, since it is larger than the sum of its proper divisors (841297356).

999040444 is a wasteful number, since it uses less digits than its factorization.

999040444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13145292 (or 13145290 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 999040444 is about 31607.6010478492. The cubic root of 999040444 is about 999.6800456401.

The spelling of 999040444 in words is "nine hundred ninety-nine million, forty thousand, four hundred forty-four".