844397120 has 56 divisors (see below), whose sum is σ = 2297972544. Its totient is φ = 289506816.

The previous prime is 844397119. The next prime is 844397131. The reversal of 844397120 is 21793448.

It is a tau number, because it is divible by the number of its divisors (56).

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, 186242 + ... + 190721.

It is an arithmetic number, because the mean of its divisors is an integer number (41035224).

Almost surely, 2^844397120 is an apocalyptic number.

844397120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

844397120 is an abundant number, since it is smaller than the sum of its proper divisors (1453575424).

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

844397120 is a wasteful number, since it uses less digits than its factorization.

844397120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376987 (or 376977 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 844397120 is about 29058.5120059510. The cubic root of 844397120 is about 945.1823020167.

The spelling of 844397120 in words is "eight hundred forty-four million, three hundred ninety-seven thousand, one hundred twenty".