3943000020 has 24 divisors (see below), whose sum is σ = 11040400224. Its totient is φ = 1051466656.

The previous prime is 3943000001. The next prime is 3943000021. The reversal of 3943000020 is 200003493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943000021) 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 7 ways as a sum of consecutive naturals, for example, 32858274 + ... + 32858393.

It is an arithmetic number, because the mean of its divisors is an integer number (460016676).

Almost surely, 2^3943000020 is an apocalyptic number.

3943000020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3943000020 is an abundant number, since it is smaller than the sum of its proper divisors (7097400204).

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

3943000020 is a wasteful number, since it uses less digits than its factorization.

3943000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65716679 (or 65716677 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 3943000020 is about 62793.3119050110. The cubic root of 3943000020 is about 1579.8247976429.

The spelling of 3943000020 in words is "three billion, nine hundred forty-three million, twenty", and thus it is an aban number.