3908861 has 8 divisors (see below), whose sum is σ = 4515264. Its totient is φ = 3344320.

The previous prime is 3908857. The next prime is 3908867. The reversal of 3908861 is 1688093.

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 3908861 - 2² = 3908857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3908867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10265 + ... + 10638.

It is an arithmetic number, because the mean of its divisors is an integer number (564408).

Almost surely, 2^3908861 is an apocalyptic number.

It is an amenable number.

3908861 is a deficient number, since it is larger than the sum of its proper divisors (606403).

3908861 is a wasteful number, since it uses less digits than its factorization.

3908861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20931.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3908861 is about 1977.0839638215. The cubic root of 3908861 is about 157.5252130628.

The spelling of 3908861 in words is "three million, nine hundred eight thousand, eight hundred sixty-one".