889909440 has 224 divisors, whose sum is σ = 3254191104. Its totient is φ = 201830400.

The previous prime is 889909417. The next prime is 889909453. The reversal of 889909440 is 44909988.

It is a tau number, because it is divible by the number of its divisors (224).

It is a super-2 number, since 2×889909440² = 1583877622802227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1014282 + ... + 1015158.

Almost surely, 2^889909440 is an apocalyptic number.

889909440 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 889909440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627095552).

889909440 is an abundant number, since it is smaller than the sum of its proper divisors (2364281664).

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

889909440 is a wasteful number, since it uses less digits than its factorization.

889909440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 889909440 is about 29831.3499526924. The cubic root of 889909440 is about 961.8675451529.

The spelling of 889909440 in words is "eight hundred eighty-nine million, nine hundred nine thousand, four hundred forty".