889229640 has 192 divisors, whose sum is σ = 3033979200. Its totient is φ = 207235584.

The previous prime is 889229633. The next prime is 889229641. The reversal of 889229640 is 46922988.

It is a self number, because there is not a number n which added to its sum of digits gives 889229640.

It is not an unprimeable number, because it can be changed into a prime (889229641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 562371 + ... + 563949.

It is an arithmetic number, because the mean of its divisors is an integer number (15801975).

Almost surely, 2^889229640 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 889229640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516989600).

889229640 is an abundant number, since it is smaller than the sum of its proper divisors (2144749560).

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

889229640 is a wasteful number, since it uses less digits than its factorization.

889229640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644 (or 1621 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 889229640 is about 29819.9537222981. The cubic root of 889229640 is about 961.6225598780.

The spelling of 889229640 in words is "eight hundred eighty-nine million, two hundred twenty-nine thousand, six hundred forty".