8440981380 has 192 divisors, whose sum is σ = 28410842880. Its totient is φ = 2068236288.

The previous prime is 8440981369. The next prime is 8440981391. The reversal of 8440981380 is 831890448.

It is an interprime number because it is at equal distance from previous prime (8440981369) and next prime (8440981391).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1590892 + ... + 1596188.

It is an arithmetic number, because the mean of its divisors is an integer number (147973140).

Almost surely, 2^8440981380 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 8440981380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14205421440).

8440981380 is an abundant number, since it is smaller than the sum of its proper divisors (19969861500).

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

8440981380 is a wasteful number, since it uses less digits than its factorization.

8440981380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555 (or 5547 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8440981380 is about 91874.8136324640. The cubic root of 8440981380 is about 2036.0931715512.

The spelling of 8440981380 in words is "eight billion, four hundred forty million, nine hundred eighty-one thousand, three hundred eighty".