3943906827840 has 168 divisors, whose sum is σ = 15503310014400. Its totient is φ = 901464413184.

The previous prime is 3943906827827. The next prime is 3943906827851. The reversal of 3943906827840 is 487286093493.

3943906827840 is a `hidden beast` number, since 3 + 94 + 390 + 6 + 82 + 7 + 84 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97794990 + ... + 97835309.

Almost surely, 2^{3943906827840} is an apocalyptic number.

3943906827840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3943906827840 is an abundant number, since it is smaller than the sum of its proper divisors (11559403186560).

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

3943906827840 is a wasteful number, since it uses less digits than its factorization.

3943906827840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195630329 (or 195630316 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 3943906827840 in words is "three trillion, nine hundred forty-three billion, nine hundred six million, eight hundred twenty-seven thousand, eight hundred forty".