3908661 has 16 divisors (see below), whose sum is σ = 5606400. Its totient is φ = 2414448.

The previous prime is 3908659. The next prime is 3908687. The reversal of 3908661 is 1668093.

It is not a de Polignac number, because 3908661 - 2¹ = 3908659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3908561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1950 + ... + 3408.

It is an arithmetic number, because the mean of its divisors is an integer number (350400).

Almost surely, 2^3908661 is an apocalyptic number.

It is an amenable number.

3908661 is a deficient number, since it is larger than the sum of its proper divisors (1697739).

3908661 is a wasteful number, since it uses less digits than its factorization.

3908661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3908661 is about 1977.0333836332. The cubic root of 3908661 is about 157.5225263825.

The spelling of 3908661 in words is "three million, nine hundred eight thousand, six hundred sixty-one".