3963975 has 24 divisors (see below), whose sum is σ = 6941520. Its totient is φ = 1989120.

The previous prime is 3963959. The next prime is 3963977. The reversal of 3963975 is 5793693.

It is not a de Polignac number, because 3963975 - 2⁴ = 3963959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3963977) 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 23 ways as a sum of consecutive naturals, for example, 280 + ... + 2829.

It is an arithmetic number, because the mean of its divisors is an integer number (289230).

Almost surely, 2^3963975 is an apocalyptic number.

3963975 is a deficient number, since it is larger than the sum of its proper divisors (2977545).

3963975 is a wasteful number, since it uses less digits than its factorization.

3963975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139 (or 3134 counting only the distinct ones).

The product of its digits is 153090, while the sum is 42.

The square root of 3963975 is about 1990.9733800330. The cubic root of 3963975 is about 158.2621163253.

It can be divided in two parts, 396 and 3975, that added together give a triangular number (4371 = T₉₃).

The spelling of 3963975 in words is "three million, nine hundred sixty-three thousand, nine hundred seventy-five".