844487964 has 96 divisors (see below), whose sum is σ = 2306304000. Its totient is φ = 266701248.

The previous prime is 844487953. The next prime is 844487993. The reversal of 844487964 is 469784448.

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

It is a self number, because there is not a number n which added to its sum of digits gives 844487964.

It is a congruent number.

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, 269197 + ... + 272315.

It is an arithmetic number, because the mean of its divisors is an integer number (24024000).

Almost surely, 2^844487964 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 844487964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153152000).

844487964 is an abundant number, since it is smaller than the sum of its proper divisors (1461816036).

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

844487964 is a wasteful number, since it uses less digits than its factorization.

844487964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264 (or 3256 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The square root of 844487964 is about 29060.0750859319. The cubic root of 844487964 is about 945.2161964407.

The spelling of 844487964 in words is "eight hundred forty-four million, four hundred eighty-seven thousand, nine hundred sixty-four".