998299461889 has 4 divisors (see below), whose sum is σ = 1014665026900. Its totient is φ = 981933896880.

The previous prime is 998299461877. The next prime is 998299461893. The reversal of 998299461889 is 988164992899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988164992899 = 7 ⋅141166427557.

It can be written as a sum of positive squares in 2 ways, for example, as 479013483664 + 519285978225 = 692108^2 + 720615^2 .

It is a cyclic number.

It is not a de Polignac number, because 998299461889 - 2²⁹ = 997762590977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998299461899) 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, 8182782414 + ... + 8182782535.

It is an arithmetic number, because the mean of its divisors is an integer number (253666256725).

Almost surely, 2^998299461889 is an apocalyptic number.

It is an amenable number.

998299461889 is a deficient number, since it is larger than the sum of its proper divisors (16365565011).

998299461889 is a wasteful number, since it uses less digits than its factorization.

998299461889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16365565010.

The product of its digits is 1451188224, while the sum is 82.

The spelling of 998299461889 in words is "nine hundred ninety-eight billion, two hundred ninety-nine million, four hundred sixty-one thousand, eight hundred eighty-nine".