889171920 has 480 divisors, whose sum is σ = 3776258304. Its totient is φ = 182476800.

The previous prime is 889171919. The next prime is 889171951. The reversal of 889171920 is 29171988.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2686155 + ... + 2686485.

Almost surely, 2^889171920 is an apocalyptic number.

889171920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 889171920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1888129152).

889171920 is an abundant number, since it is smaller than the sum of its proper divisors (2887086384).

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

889171920 is a wasteful number, since it uses less digits than its factorization.

889171920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 889171920 is about 29818.9858982495. The cubic root of 889171920 is about 961.6017530835.

The spelling of 889171920 in words is "eight hundred eighty-nine million, one hundred seventy-one thousand, nine hundred twenty".