846489984 has 64 divisors (see below), whose sum is σ = 2264808000. Its totient is φ = 280115712.

The previous prime is 846489971. The next prime is 846490003. The reversal of 846489984 is 489984648.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45447 + ... + 61305.

It is an arithmetic number, because the mean of its divisors is an integer number (35387625).

Almost surely, 2^846489984 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 846489984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132404000).

846489984 is an abundant number, since it is smaller than the sum of its proper divisors (1418318016).

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

846489984 is a wasteful number, since it uses less digits than its factorization.

846489984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16015 (or 16003 counting only the distinct ones).

The product of its digits is 15925248, while the sum is 60.

The square root of 846489984 is about 29094.5009237141. The cubic root of 846489984 is about 945.9625454675.

The spelling of 846489984 in words is "eight hundred forty-six million, four hundred eighty-nine thousand, nine hundred eighty-four".