916978 has 16 divisors (see below), whose sum is σ = 1476000. Its totient is φ = 425952.

The previous prime is 916973. The next prime is 916999. The reversal of 916978 is 879619.

It is a self number, because there is not a number n which added to its sum of digits gives 916978.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2038 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (92250).

2⁹¹⁶⁹⁷⁸ is an apocalyptic number.

916978 is a deficient number, since it is larger than the sum of its proper divisors (559022).

916978 is a wasteful number, since it uses less digits than its factorization.

916978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

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

The square root of 916978 is about 957.5896824841. The cubic root of 916978 is about 97.1522743795.

The spelling of 916978 in words is "nine hundred sixteen thousand, nine hundred seventy-eight".