8447994 has 24 divisors (see below), whose sum is σ = 18412212. Its totient is φ = 2799360.

The previous prime is 8447987. The next prime is 8448007. The reversal of 8447994 is 4997448.

It can be written as a sum of positive squares in 2 ways, for example, as 7767369 + 680625 = 2787^2 + 825^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1962 + ... + 4554.

Almost surely, 2^8447994 is an apocalyptic number.

8447994 is an abundant number, since it is smaller than the sum of its proper divisors (9964218).

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

8447994 is a wasteful number, since it uses less digits than its factorization.

8447994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782 (or 2779 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 8447994 is about 2906.5433077799. The cubic root of 8447994 is about 203.6656865700.

The spelling of 8447994 in words is "eight million, four hundred forty-seven thousand, nine hundred ninety-four".