3985994980 has 48 divisors (see below), whose sum is σ = 9281280960. Its totient is φ = 1425686400.

The previous prime is 3985994963. The next prime is 3985994993. The reversal of 3985994980 is 894995893.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135090 + ... + 161929.

It is an arithmetic number, because the mean of its divisors is an integer number (193360020).

Almost surely, 2^3985994980 is an apocalyptic number.

It is an amenable number.

3985994980 is an abundant number, since it is smaller than the sum of its proper divisors (5295285980).

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

3985994980 is a wasteful number, since it uses less digits than its factorization.

3985994980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297100 (or 297098 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 64.

The square root of 3985994980 is about 63134.7367144269. The cubic root of 3985994980 is about 1585.5462536169.

The spelling of 3985994980 in words is "three billion, nine hundred eighty-five million, nine hundred ninety-four thousand, nine hundred eighty".