889238664 has 96 divisors (see below), whose sum is σ = 2468232000. Its totient is φ = 289111680.

The previous prime is 889238659. The next prime is 889238671. The reversal of 889238664 is 466832988.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 889238664.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 758799 + ... + 759969.

It is an arithmetic number, because the mean of its divisors is an integer number (25710750).

Almost surely, 2^889238664 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 889238664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234116000).

889238664 is an abundant number, since it is smaller than the sum of its proper divisors (1578993336).

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

889238664 is a wasteful number, since it uses less digits than its factorization.

889238664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1428 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 889238664 is about 29820.1050299961. The cubic root of 889238664 is about 961.6258127508.

The spelling of 889238664 in words is "eight hundred eighty-nine million, two hundred thirty-eight thousand, six hundred sixty-four".