889443828 has 240 divisors, whose sum is σ = 2900561664. Its totient is φ = 231413760.

The previous prime is 889443823. The next prime is 889443869. The reversal of 889443828 is 828344988.

It is a super-2 number, since 2×889443828² = 1582220646334587168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889443823) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2859793 + ... + 2860103.

Almost surely, 2^889443828 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 889443828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450280832).

889443828 is an abundant number, since it is smaller than the sum of its proper divisors (2011117836).

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

889443828 is a wasteful number, since it uses less digits than its factorization.

889443828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 433 counting only the distinct ones).

The product of its digits is 3538944, while the sum is 54.

The square root of 889443828 is about 29823.5448597245. The cubic root of 889443828 is about 961.6997620871.

The spelling of 889443828 in words is "eight hundred eighty-nine million, four hundred forty-three thousand, eight hundred twenty-eight".