844019712 has 144 divisors (see below), whose sum is σ = 2523339000. Its totient is φ = 271466496.

The previous prime is 844019699. The next prime is 844019717. The reversal of 844019712 is 217910448.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (844019717) 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 11 ways as a sum of consecutive naturals, for example, 533739 + ... + 535317.

Almost surely, 2^844019712 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 844019712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261669500).

844019712 is an abundant number, since it is smaller than the sum of its proper divisors (1679319288).

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

844019712 is a wasteful number, since it uses less digits than its factorization.

844019712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636 (or 1613 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 844019712 is about 29052.0173481980. The cubic root of 844019712 is about 945.0414628654.

The spelling of 844019712 in words is "eight hundred forty-four million, nineteen thousand, seven hundred twelve".