8443794240 has 448 divisors, whose sum is σ = 34308288000. Its totient is φ = 1915011072.

The previous prime is 8443794221. The next prime is 8443794283. The reversal of 8443794240 is 424973448.

It is a tau number, because it is divible by the number of its divisors (448).

It is a super-2 number, since 2×8443794240² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9011052 + ... + 9011988.

It is an arithmetic number, because the mean of its divisors is an integer number (76581000).

Almost surely, 2^8443794240 is an apocalyptic number.

8443794240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8443794240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17154144000).

8443794240 is an abundant number, since it is smaller than the sum of its proper divisors (25864493760).

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

8443794240 is a wasteful number, since it uses less digits than its factorization.

8443794240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 8443794240 is about 91890.1204700484. The cubic root of 8443794240 is about 2036.3193146468.

The spelling of 8443794240 in words is "eight billion, four hundred forty-three million, seven hundred ninety-four thousand, two hundred forty".