3959605 has 8 divisors (see below), whose sum is σ = 5117112. Its totient is φ = 2923968.

The previous prime is 3959591. The next prime is 3959651. The reversal of 3959605 is 5069593.

It can be written as a sum of positive squares in 4 ways, for example, as 51076 + 3908529 = 226^2 + 1977^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3959605 - 2⁷ = 3959477 is a prime.

3959605 is a lucky number.

It is a congruent number.

It is an unprimeable number.

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, 30394 + ... + 30523.

It is an arithmetic number, because the mean of its divisors is an integer number (639639).

Almost surely, 2^3959605 is an apocalyptic number.

It is an amenable number.

3959605 is a deficient number, since it is larger than the sum of its proper divisors (1157507).

3959605 is a wasteful number, since it uses less digits than its factorization.

3959605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60935.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 3959605 is about 1989.8756242539. The cubic root of 3959605 is about 158.2039373717.

It can be divided in two parts, 395 and 9605, that added together give a 4-th power (10000 = 10⁴).

The spelling of 3959605 in words is "three million, nine hundred fifty-nine thousand, six hundred five".