998740211 has 4 divisors (see below), whose sum is σ = 1141417392. Its totient is φ = 856063032.

The previous prime is 998740189. The next prime is 998740213. The reversal of 998740211 is 112047899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112047899 = 1327 ⋅84437.

It is a cyclic number.

It is not a de Polignac number, because 998740211 - 2⁶ = 998740147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998740213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71338580 + ... + 71338593.

It is an arithmetic number, because the mean of its divisors is an integer number (285354348).

Almost surely, 2^998740211 is an apocalyptic number.

998740211 is a deficient number, since it is larger than the sum of its proper divisors (142677181).

998740211 is a wasteful number, since it uses less digits than its factorization.

998740211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142677180.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 998740211 is about 31602.8513112346. The cubic root of 998740211 is about 999.5798938689.

The spelling of 998740211 in words is "nine hundred ninety-eight million, seven hundred forty thousand, two hundred eleven".