978225844 has 12 divisors (see below), whose sum is σ = 1724212000. Its totient is φ = 485593848.

The previous prime is 978225821. The next prime is 978225851. The reversal of 978225844 is 448522879.

978225844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879144 + ... + 880255.

Almost surely, 2^978225844 is an apocalyptic number.

It is an amenable number.

978225844 is a deficient number, since it is larger than the sum of its proper divisors (745986156).

978225844 is a wasteful number, since it uses less digits than its factorization.

978225844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759542 (or 1759540 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 978225844 is about 31276.6021811833. The cubic root of 978225844 is about 992.6886220318.

The spelling of 978225844 in words is "nine hundred seventy-eight million, two hundred twenty-five thousand, eight hundred forty-four".