3975609 has 8 divisors (see below), whose sum is σ = 5782752. Its totient is φ = 2409440.

The previous prime is 3975599. The next prime is 3975649. The reversal of 3975609 is 9065793.

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

It is not a de Polignac number, because 3975609 - 2⁴ = 3975593 is a prime.

It is a zygodrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (3975649) 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, 60204 + ... + 60269.

It is an arithmetic number, because the mean of its divisors is an integer number (722844).

Almost surely, 2^3975609 is an apocalyptic number.

It is an amenable number.

3975609 is a deficient number, since it is larger than the sum of its proper divisors (1807143).

3975609 is a wasteful number, since it uses less digits than its factorization.

3975609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120487.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 3975609 is about 1993.8929259115. The cubic root of 3975609 is about 158.4167946558.

It can be divided in two parts, 397 and 5609, that added together give a palindrome (6006).

The spelling of 3975609 in words is "three million, nine hundred seventy-five thousand, six hundred nine".