999044999999 has 4 divisors (see below), whose sum is σ = 999103444200. Its totient is φ = 998986555800.

The previous prime is 999044999969. The next prime is 999045000047. The reversal of 999044999999 is 999999440999.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 999044999999 - 2¹² = 999044995903 is a prime.

It is a Duffinian number.

999044999999 is a modest number, since divided by 999999 gives 999044 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999044999969) 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, 29196452 + ... + 29230649.

It is an arithmetic number, because the mean of its divisors is an integer number (249775861050).

Almost surely, 2^999044999999 is an apocalyptic number.

999044999999 is a deficient number, since it is larger than the sum of its proper divisors (58444201).

999044999999 is a wasteful number, since it uses less digits than its factorization.

999044999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58444200.

The product of its (nonzero) digits is 6198727824, while the sum is 89.

The spelling of 999044999999 in words is "nine hundred ninety-nine billion, forty-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".