8391344 has 20 divisors (see below), whose sum is σ = 17509296. Its totient is φ = 3872832.

The previous prime is 8391337. The next prime is 8391349. The reversal of 8391344 is 4431938.

8391344 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 8³ + 3³ + 9 + 1 + 3⁷ + 4¹¹ + 4¹¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 8391344.

It is not an unprimeable number, because it can be changed into a prime (8391349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19964 + ... + 20379.

Almost surely, 2^8391344 is an apocalyptic number.

It is an amenable number.

8391344 is an abundant number, since it is smaller than the sum of its proper divisors (9117952).

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

8391344 is a wasteful number, since it uses less digits than its factorization.

8391344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40364 (or 40358 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 8391344 is about 2896.7816624661. The cubic root of 8391344 is about 203.2094225486.

The spelling of 8391344 in words is "eight million, three hundred ninety-one thousand, three hundred forty-four".