3989432 has 8 divisors (see below), whose sum is σ = 7480200. Its totient is φ = 1994712.

The previous prime is 3989431. The next prime is 3989437. The reversal of 3989432 is 2349893.

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 3¹³ + 9⁴ + 8³ + 9⁶ + 4⁹ + 3¹³ + 2⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249332 + ... + 249347.

It is an arithmetic number, because the mean of its divisors is an integer number (935025).

Almost surely, 2^3989432 is an apocalyptic number.

It is an amenable number.

3989432 is a deficient number, since it is larger than the sum of its proper divisors (3490768).

3989432 is a wasteful number, since it uses less digits than its factorization.

3989432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498685 (or 498681 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 3989432 is about 1997.3562526500. The cubic root of 3989432 is about 158.6001847818.

The spelling of 3989432 in words is "three million, nine hundred eighty-nine thousand, four hundred thirty-two".