978844 has 6 divisors (see below), whose sum is σ = 1712984. Its totient is φ = 489420.

The previous prime is 978839. The next prime is 978851. The reversal of 978844 is 448879.

It is a junction number, because it is equal to n+sod(n) for n = 978797 and 978806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122352 + ... + 122359.

2⁹⁷⁸⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

978844 is a deficient number, since it is larger than the sum of its proper divisors (734140).

978844 is a wasteful number, since it uses less digits than its factorization.

978844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244715 (or 244713 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 978844 is about 989.3654532073. The cubic root of 978844 is about 99.2897676421.

The spelling of 978844 in words is "nine hundred seventy-eight thousand, eight hundred forty-four".