8331978 has 16 divisors (see below), whose sum is σ = 16710336. Its totient is φ = 2769600.

The previous prime is 8331977. The next prime is 8331997. The reversal of 8331978 is 8791338.

It is not an unprimeable number, because it can be changed into a prime (8331977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675 + ... + 4137.

It is an arithmetic number, because the mean of its divisors is an integer number (1044396).

Almost surely, 2^8331978 is an apocalyptic number.

8331978 is an abundant number, since it is smaller than the sum of its proper divisors (8378358).

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

8331978 is a wasteful number, since it uses less digits than its factorization.

8331978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869.

The product of its digits is 36288, while the sum is 39.

The square root of 8331978 is about 2886.5165857829. The cubic root of 8331978 is about 202.7290747084.

The spelling of 8331978 in words is "eight million, three hundred thirty-one thousand, nine hundred seventy-eight".