978916 has 24 divisors (see below), whose sum is σ = 1806336. Its totient is φ = 463680.

The previous prime is 978907. The next prime is 978917. The reversal of 978916 is 619879.

It is not an unprimeable number, because it can be changed into a prime (978917) by changing a digit.

978916 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7645 + ... + 7771.

It is an arithmetic number, because the mean of its divisors is an integer number (75264).

2⁹⁷⁸⁹¹⁶ is an apocalyptic number.

It is an amenable number.

978916 is a deficient number, since it is larger than the sum of its proper divisors (827420).

978916 is a wasteful number, since it uses less digits than its factorization.

978916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219 (or 217 counting only the distinct ones).

The product of its digits is 27216, while the sum is 40.

The square root of 978916 is about 989.4018394970. The cubic root of 978916 is about 99.2922020402.

The spelling of 978916 in words is "nine hundred seventy-eight thousand, nine hundred sixteen".