3943380078 has 192 divisors, whose sum is σ = 10314501120. Its totient is φ = 1111968000.

The previous prime is 3943380071. The next prime is 3943380083. The reversal of 3943380078 is 8700833493.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943380071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14551083 + ... + 14551353.

It is an arithmetic number, because the mean of its divisors is an integer number (53721360).

Almost surely, 2^3943380078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3943380078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5157250560).

3943380078 is an abundant number, since it is smaller than the sum of its proper divisors (6371121042).

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

3943380078 is a wasteful number, since it uses less digits than its factorization.

3943380078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 3943380078 is about 62796.3380938730. The cubic root of 3943380078 is about 1579.8755547449.

The spelling of 3943380078 in words is "three billion, nine hundred forty-three million, three hundred eighty thousand, seventy-eight".