998211 has 8 divisors (see below), whose sum is σ = 1337680. Its totient is φ = 662112.

The previous prime is 998201. The next prime is 998213. The reversal of 998211 is 112899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 998211 - 2⁶ = 998147 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (998213) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40 + ... + 1413.

It is an arithmetic number, because the mean of its divisors is an integer number (167210).

2⁹⁹⁸²¹¹ is an apocalyptic number.

998211 is a deficient number, since it is larger than the sum of its proper divisors (339469).

998211 is a wasteful number, since it uses less digits than its factorization.

998211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685.

The product of its digits is 1296, while the sum is 30.

The square root of 998211 is about 999.1050995766. The cubic root of 998211 is about 99.9403310699.

The spelling of 998211 in words is "nine hundred ninety-eight thousand, two hundred eleven".