8485978 has 4 divisors (see below), whose sum is σ = 12728970. Its totient is φ = 4242988.

The previous prime is 8485973. The next prime is 8485979. The reversal of 8485978 is 8795848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8277129 + 208849 = 2877^2 + 457^2 .

It is not an unprimeable number, because it can be changed into a prime (8485973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121493 + ... + 2121496.

Almost surely, 2^8485978 is an apocalyptic number.

8485978 is a deficient number, since it is larger than the sum of its proper divisors (4242992).

8485978 is a wasteful number, since it uses less digits than its factorization.

8485978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242991.

The product of its digits is 645120, while the sum is 49.

The square root of 8485978 is about 2913.0702016944. The cubic root of 8485978 is about 203.9704718251.

The spelling of 8485978 in words is "eight million, four hundred eighty-five thousand, nine hundred seventy-eight".