989936000 has 64 divisors (see below), whose sum is σ = 2461268160. Its totient is φ = 395968000.

The previous prime is 989935979. The next prime is 989936009. The reversal of 989936000 is 639989.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989936009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14936 + ... + 46935.

It is an arithmetic number, because the mean of its divisors is an integer number (38457315).

Almost surely, 2^989936000 is an apocalyptic number.

It is an amenable number.

989936000 is an abundant number, since it is smaller than the sum of its proper divisors (1471332160).

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

989936000 is an equidigital number, since it uses as much as digits as its factorization.

989936000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61900 (or 61878 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 989936000 is about 31463.2484019054. The cubic root of 989936000 is about 996.6340161984.

The spelling of 989936000 in words is "nine hundred eighty-nine million, nine hundred thirty-six thousand".