3985933990 has 16 divisors (see below), whose sum is σ = 7175963520. Its totient is φ = 1594088640.

The previous prime is 3985933969. The next prime is 3985934003. The reversal of 3985933990 is 993395893.

It is a happy number.

3985933990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28651 + ... + 93769.

It is an arithmetic number, because the mean of its divisors is an integer number (448497720).

Almost surely, 2^3985933990 is an apocalyptic number.

3985933990 is a deficient number, since it is larger than the sum of its proper divisors (3190029530).

3985933990 is a wasteful number, since it uses less digits than its factorization.

3985933990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71247.

The product of its (nonzero) digits is 7085880, while the sum is 58.

The square root of 3985933990 is about 63134.2536979729. The cubic root of 3985933990 is about 1585.5381667227.

The spelling of 3985933990 in words is "three billion, nine hundred eighty-five million, nine hundred thirty-three thousand, nine hundred ninety".