844339872 has 48 divisors (see below), whose sum is σ = 2292827040. Its totient is φ = 271740672.

The previous prime is 844339871. The next prime is 844339883. The reversal of 844339872 is 278933448.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (844339871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148858 + ... + 154425.

It is an arithmetic number, because the mean of its divisors is an integer number (47767230).

Almost surely, 2^844339872 is an apocalyptic number.

It is an amenable number.

844339872 is an abundant number, since it is smaller than the sum of its proper divisors (1448487168).

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

844339872 is a wasteful number, since it uses less digits than its factorization.

844339872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303325 (or 303317 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 844339872 is about 29057.5269422571. The cubic root of 844339872 is about 945.1609412067.

The spelling of 844339872 in words is "eight hundred forty-four million, three hundred thirty-nine thousand, eight hundred seventy-two".