889496640 has 448 divisors, whose sum is σ = 3359139840. Its totient is φ = 223948800.

The previous prime is 889496639. The next prime is 889496659. The reversal of 889496640 is 46694988.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21695020 + ... + 21695060.

It is an arithmetic number, because the mean of its divisors is an integer number (7498080).

Almost surely, 2^889496640 is an apocalyptic number.

889496640 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 889496640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1679569920).

889496640 is an abundant number, since it is smaller than the sum of its proper divisors (2469643200).

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

889496640 is an equidigital number, since it uses as much as digits as its factorization.

889496640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The square root of 889496640 is about 29824.4302544072. The cubic root of 889496640 is about 961.7187958103.

The spelling of 889496640 in words is "eight hundred eighty-nine million, four hundred ninety-six thousand, six hundred forty".