8889978 has 8 divisors (see below), whose sum is σ = 17779968. Its totient is φ = 2963324.

The previous prime is 8889977. The next prime is 8890039. The reversal of 8889978 is 8799888.

It is a sphenic number, since it is the product of 3 distinct primes.

8889978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (8889971) 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 3 ways as a sum of consecutive naturals, for example, 740826 + ... + 740837.

It is an arithmetic number, because the mean of its divisors is an integer number (2222496).

Almost surely, 2^8889978 is an apocalyptic number.

8889978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8889978 is a wasteful number, since it uses less digits than its factorization.

8889978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481668.

The product of its digits is 2322432, while the sum is 57.

The square root of 8889978 is about 2981.6066138912. The cubic root of 8889978 is about 207.1572936884.

The spelling of 8889978 in words is "eight million, eight hundred eighty-nine thousand, nine hundred seventy-eight".