998258211 has 6 divisors (see below), whose sum is σ = 1441928540. Its totient is φ = 665505468.

The previous prime is 998258179. The next prime is 998258243. The reversal of 998258211 is 112852899.

It is an interprime number because it is at equal distance from previous prime (998258179) and next prime (998258243).

It is not a de Polignac number, because 998258211 - 2⁵ = 998258179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998258251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55458781 + ... + 55458798.

Almost surely, 2^998258211 is an apocalyptic number.

998258211 is a deficient number, since it is larger than the sum of its proper divisors (443670329).

998258211 is a wasteful number, since it uses less digits than its factorization.

998258211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110917585 (or 110917582 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 998258211 is about 31595.2244967495. The cubic root of 998258211 is about 999.4190662480.

The spelling of 998258211 in words is "nine hundred ninety-eight million, two hundred fifty-eight thousand, two hundred eleven".