8487978 has 8 divisors (see below), whose sum is σ = 16975968. Its totient is φ = 2829324.

The previous prime is 8487959. The next prime is 8488013. The reversal of 8487978 is 8797848.

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

8487978 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8487978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707326 + ... + 707337.

It is an arithmetic number, because the mean of its divisors is an integer number (2121996).

Almost surely, 2^8487978 is an apocalyptic number.

8487978 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.

8487978 is a wasteful number, since it uses less digits than its factorization.

8487978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414668.

The product of its digits is 903168, while the sum is 51.

The square root of 8487978 is about 2913.4134619034. The cubic root of 8487978 is about 203.9864946846.

The spelling of 8487978 in words is "eight million, four hundred eighty-seven thousand, nine hundred seventy-eight".