1000000998999 has 16 divisors (see below), whose sum is σ = 1521523043040. Its totient is φ = 648649296000.

The previous prime is 1000000998979. The next prime is 1000000999007. The reversal of 1000000998999 is 9998990000001.

It is a de Polignac number, because none of the positive numbers 2^k-1000000998999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000000998979) 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, 500500002 + ... + 500501999.

It is an arithmetic number, because the mean of its divisors is an integer number (95095190190).

Almost surely, 2^{1000000998999} is an apocalyptic number.

1000000998999 is a deficient number, since it is larger than the sum of its proper divisors (521522044041).

1000000998999 is a wasteful number, since it uses less digits than its factorization.

1000000998999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001002047 (or 1001002041 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 54.

The spelling of 1000000998999 in words is "one trillion, nine hundred ninety-eight thousand, nine hundred ninety-nine".