1000000998979 has 2 divisors, whose sum is σ = 1000000998980. Its totient is φ = 1000000998978.

The previous prime is 1000000998961. The next prime is 1000000999007. The reversal of 1000000998979 is 9798990000001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000000998979 - 2¹⁷ = 1000000867907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000000998379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500000499489 + 500000499490.

It is an arithmetic number, because the mean of its divisors is an integer number (500000499490).

Almost surely, 2^{1000000998979} is an apocalyptic number.

1000000998979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000000998979 is an equidigital number, since it uses as much as digits as its factorization.

1000000998979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 52.

The spelling of 1000000998979 in words is "one trillion, nine hundred ninety-eight thousand, nine hundred seventy-nine".