889426440 has 256 divisors, whose sum is σ = 3458880000. Its totient is φ = 203297472.

The previous prime is 889426409. The next prime is 889426441. The reversal of 889426440 is 44624988.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (889426441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127060917 + ... + 127060923.

It is an arithmetic number, because the mean of its divisors is an integer number (13511250).

Almost surely, 2^889426440 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 889426440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729440000).

889426440 is an abundant number, since it is smaller than the sum of its proper divisors (2569453560).

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

889426440 is an frugal number, since it uses more digits than its factorization.

889426440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 889426440 is about 29823.2533436579. The cubic root of 889426440 is about 961.6934951954.

The spelling of 889426440 in words is "eight hundred eighty-nine million, four hundred twenty-six thousand, four hundred forty".