845320944 has 320 divisors, whose sum is σ = 2659829760. Its totient is φ = 228925440.

The previous prime is 845320939. The next prime is 845320951. The reversal of 845320944 is 449023548.

It is a super-2 number, since 2×845320944² = 1429134996730102272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 17985529 + ... + 17985575.

It is an arithmetic number, because the mean of its divisors is an integer number (8311968).

Almost surely, 2^845320944 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 845320944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329914880).

845320944 is an abundant number, since it is smaller than the sum of its proper divisors (1814508816).

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

845320944 is a wasteful number, since it uses less digits than its factorization.

845320944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 845320944 is about 29074.4035880360. The cubic root of 845320944 is about 945.5268728468.

The spelling of 845320944 in words is "eight hundred forty-five million, three hundred twenty thousand, nine hundred forty-four".