3943948834280 has 384 divisors, whose sum is σ = 11287933886880. Its totient is φ = 1229031014400.

The previous prime is 3943948834253. The next prime is 3943948834289. The reversal of 3943948834280 is 824388493493.

It can be written as a sum of positive squares in 16 ways, for example, as 196325203396 + 3747623630884 = 443086^2 + 1935878^2 .

It is a Harshad number since it is a multiple of its sum of digits (65).

It is not an unprimeable number, because it can be changed into a prime (3943948834289) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1408048880 + ... + 1408051680.

Almost surely, 2^{3943948834280} 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 3943948834280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5643966943440).

3943948834280 is an abundant number, since it is smaller than the sum of its proper divisors (7343985052600).

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

3943948834280 is a wasteful number, since it uses less digits than its factorization.

3943948834280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669 (or 3658 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 65.

The spelling of 3943948834280 in words is "three trillion, nine hundred forty-three billion, nine hundred forty-eight million, eight hundred thirty-four thousand, two hundred eighty".