3983965 has 8 divisors (see below), whose sum is σ = 4935168. Its totient is φ = 3084240.

The previous prime is 3983963. The next prime is 3983981. The reversal of 3983965 is 5693893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3983965 - 2¹ = 3983963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3983963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12697 + ... + 13006.

It is an arithmetic number, because the mean of its divisors is an integer number (616896).

Almost surely, 2^3983965 is an apocalyptic number.

It is an amenable number.

3983965 is a deficient number, since it is larger than the sum of its proper divisors (951203).

3983965 is a wasteful number, since it uses less digits than its factorization.

3983965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25739.

The product of its digits is 174960, while the sum is 43.

The square root of 3983965 is about 1995.9872244080. The cubic root of 3983965 is about 158.5277046577.

The spelling of 3983965 in words is "three million, nine hundred eighty-three thousand, nine hundred sixty-five".