3943343880 has 192 divisors, whose sum is σ = 14741475840. Its totient is φ = 895504896.

The previous prime is 3943343863. The next prime is 3943343881. The reversal of 3943343880 is 883433493.

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

It is not an unprimeable number, because it can be changed into a prime (3943343881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 390657 + ... + 400623.

It is an arithmetic number, because the mean of its divisors is an integer number (76778520).

Almost surely, 2^3943343880 is an apocalyptic number.

3943343880 is a gapful number since it is divisible by the number (30) 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 3943343880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7370737920).

3943343880 is an abundant number, since it is smaller than the sum of its proper divisors (10798131960).

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

3943343880 is a wasteful number, since it uses less digits than its factorization.

3943343880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10148 (or 10141 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 45.

The square root of 3943343880 is about 62796.0498757685. The cubic root of 3943343880 is about 1579.8707206086.

The spelling of 3943343880 in words is "three billion, nine hundred forty-three million, three hundred forty-three thousand, eight hundred eighty".