988851 has 4 divisors (see below), whose sum is σ = 1318472. Its totient is φ = 659232.

The previous prime is 988849. The next prime is 988859. The reversal of 988851 is 158889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158889 = 3 ⋅52963.

It is not a de Polignac number, because 988851 - 2¹ = 988849 is a prime.

It is a D-number.

It is a Duffinian number.

988851 is a lucky number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (988859) 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, 164806 + ... + 164811.

It is an arithmetic number, because the mean of its divisors is an integer number (329618).

2⁹⁸⁸⁸⁵¹ is an apocalyptic number.

988851 is a deficient number, since it is larger than the sum of its proper divisors (329621).

988851 is a wasteful number, since it uses less digits than its factorization.

988851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329620.

The product of its digits is 23040, while the sum is 39.

The square root of 988851 is about 994.4098752527. The cubic root of 988851 is about 99.6269769348.

The spelling of 988851 in words is "nine hundred eighty-eight thousand, eight hundred fifty-one".