8447992 has 48 divisors (see below), whose sum is σ = 19247760. Its totient is φ = 3459456.

The previous prime is 8447987. The next prime is 8448007. The reversal of 8447992 is 2997448.

8447992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8548 + ... + 9484.

It is an arithmetic number, because the mean of its divisors is an integer number (400995).

Almost surely, 2^8447992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8447992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9623880).

8447992 is an abundant number, since it is smaller than the sum of its proper divisors (10799768).

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

8447992 is a wasteful number, since it uses less digits than its factorization.

8447992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 969 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 8447992 is about 2906.5429637286. The cubic root of 8447992 is about 203.6656704979.

It can be divided in two parts, 844 and 7992, that added together give a square (8836 = 94²).

The spelling of 8447992 in words is "eight million, four hundred forty-seven thousand, nine hundred ninety-two".