3989768 has 16 divisors (see below), whose sum is σ = 7507500. Its totient is φ = 1987776.

The previous prime is 3989761. The next prime is 3989801. The reversal of 3989768 is 8679893.

It can be written as a sum of positive squares in 2 ways, for example, as 3912484 + 77284 = 1978^2 + 278^2 .

It is not an unprimeable number, because it can be changed into a prime (3989761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2078 + ... + 3506.

Almost surely, 2^3989768 is an apocalyptic number.

It is an amenable number.

3989768 is a deficient number, since it is larger than the sum of its proper divisors (3517732).

3989768 is a wasteful number, since it uses less digits than its factorization.

3989768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784 (or 1780 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 3989768 is about 1997.4403620634. The cubic root of 3989768 is about 158.6046372257.

The spelling of 3989768 in words is "three million, nine hundred eighty-nine thousand, seven hundred sixty-eight".