3955605 has 16 divisors (see below), whose sum is σ = 6402240. Its totient is φ = 2085248.

The previous prime is 3955603. The next prime is 3955621. The reversal of 3955605 is 5065593.

It is a cyclic number.

It is not a de Polignac number, because 3955605 - 2¹ = 3955603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955603) 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 15 ways as a sum of consecutive naturals, for example, 147 + ... + 2816.

It is an arithmetic number, because the mean of its divisors is an integer number (400140).

Almost surely, 2^3955605 is an apocalyptic number.

It is an amenable number.

3955605 is a deficient number, since it is larger than the sum of its proper divisors (2446635).

3955605 is a wasteful number, since it uses less digits than its factorization.

3955605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3060.

The product of its (nonzero) digits is 20250, while the sum is 33.

The square root of 3955605 is about 1988.8702823462. The cubic root of 3955605 is about 158.1506467902.

It can be divided in two parts, 3955 and 605, that added together give a triangular number (4560 = T₉₅).

The spelling of 3955605 in words is "three million, nine hundred fifty-five thousand, six hundred five".