8891988 has 48 divisors (see below), whose sum is σ = 24361344. Its totient is φ = 2471040.

The previous prime is 8891983. The next prime is 8891999.

8891988 is nontrivially palindromic in base 10.

8891988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 8891988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8891983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678 + ... + 4538.

It is an arithmetic number, because the mean of its divisors is an integer number (507528).

Almost surely, 2^8891988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8891988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12180672).

8891988 is an abundant number, since it is smaller than the sum of its proper divisors (15469356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8891988 is a wasteful number, since it uses less digits than its factorization.

8891988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912 (or 2910 counting only the distinct ones).

The product of its digits is 331776, while the sum is 51.

The square root of 8891988 is about 2981.9436614396. The cubic root of 8891988 is about 207.1729050799.

The spelling of 8891988 in words is "eight million, eight hundred ninety-one thousand, nine hundred eighty-eight".