8493940 has 72 divisors (see below), whose sum is σ = 22135680. Its totient is φ = 2680704.

The previous prime is 8493937. The next prime is 8493941. The reversal of 8493940 is 493948.

It is a self number, because there is not a number n which added to its sum of digits gives 8493940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8493941) 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 in 23 ways as a sum of consecutive naturals, for example, 23481 + ... + 23839.

It is an arithmetic number, because the mean of its divisors is an integer number (307440).

Almost surely, 2^8493940 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 8493940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11067840).

8493940 is an abundant number, since it is smaller than the sum of its proper divisors (13641740).

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

8493940 is a wasteful number, since it uses less digits than its factorization.

8493940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 8493940 is about 2914.4364806940. The cubic root of 8493940 is about 204.0342438990.

The spelling of 8493940 in words is "eight million, four hundred ninety-three thousand, nine hundred forty".