984999799999 has 16 divisors (see below), whose sum is σ = 1017426522112. Its totient is φ = 953029421568.

The previous prime is 984999799981. The next prime is 984999800023. The reversal of 984999799999 is 999997999489.

It is a cyclic number.

It is not a de Polignac number, because 984999799999 - 2⁷ = 984999799871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984999799939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3371167 + ... + 3651679.

It is an arithmetic number, because the mean of its divisors is an integer number (63589157632).

Almost surely, 2^984999799999 is an apocalyptic number.

984999799999 is a deficient number, since it is larger than the sum of its proper divisors (32426722113).

984999799999 is a wasteful number, since it uses less digits than its factorization.

984999799999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281326.

The product of its digits is 86782189536, while the sum is 100.

The spelling of 984999799999 in words is "nine hundred eighty-four billion, nine hundred ninety-nine million, seven hundred ninety-nine thousand, nine hundred ninety-nine".