3975975 has 36 divisors (see below), whose sum is σ = 7312032. Its totient is φ = 2064000.

The previous prime is 3975971. The next prime is 3976001. The reversal of 3975975 is 5795793.

It is a happy number.

It is not a de Polignac number, because 3975975 - 2² = 3975971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3975975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3975971) 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 35 ways as a sum of consecutive naturals, for example, 9010 + ... + 9440.

It is an arithmetic number, because the mean of its divisors is an integer number (203112).

Almost surely, 2^3975975 is an apocalyptic number.

3975975 is a deficient number, since it is larger than the sum of its proper divisors (3336057).

3975975 is a wasteful number, since it uses less digits than its factorization.

3975975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 480 counting only the distinct ones).

The product of its digits is 297675, while the sum is 45.

The square root of 3975975 is about 1993.9847040537. The cubic root of 3975975 is about 158.4216558622.

It can be divided in two parts, 3975 and 975, that added together give a triangular number (4950 = T₉₉).

The spelling of 3975975 in words is "three million, nine hundred seventy-five thousand, nine hundred seventy-five".