988811 has 4 divisors (see below), whose sum is σ = 991800. Its totient is φ = 985824.

The previous prime is 988789. The next prime is 988829. The reversal of 988811 is 118889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118889 = 61 ⋅1949.

It is a cyclic number.

It is not a de Polignac number, because 988811 - 2¹⁴ = 972427 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (988861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926 + ... + 1683.

It is an arithmetic number, because the mean of its divisors is an integer number (247950).

2⁹⁸⁸⁸¹¹ is an apocalyptic number.

988811 is a deficient number, since it is larger than the sum of its proper divisors (2989).

988811 is a wasteful number, since it uses less digits than its factorization.

988811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988.

The product of its digits is 4608, while the sum is 35.

The square root of 988811 is about 994.3897626183. The cubic root of 988811 is about 99.6256335801.

The spelling of 988811 in words is "nine hundred eighty-eight thousand, eight hundred eleven".