889143612 has 72 divisors (see below), whose sum is σ = 2491292160. Its totient is φ = 245841120.

The previous prime is 889143601. The next prime is 889143617. The reversal of 889143612 is 216341988.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889143617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6162 + ... + 42617.

It is an arithmetic number, because the mean of its divisors is an integer number (34601280).

Almost surely, 2^889143612 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 889143612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245646080).

889143612 is an abundant number, since it is smaller than the sum of its proper divisors (1602148548).

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

889143612 is a wasteful number, since it uses less digits than its factorization.

889143612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48831 (or 48822 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 889143612 is about 29818.5112304421. The cubic root of 889143612 is about 961.5915483411.

The spelling of 889143612 in words is "eight hundred eighty-nine million, one hundred forty-three thousand, six hundred twelve".