3908641 has 4 divisors (see below), whose sum is σ = 4263984. Its totient is φ = 3553300.

The previous prime is 3908629. The next prime is 3908659. The reversal of 3908641 is 1468093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3908641 - 2⁵ = 3908609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3908441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177655 + ... + 177676.

It is an arithmetic number, because the mean of its divisors is an integer number (1065996).

Almost surely, 2^3908641 is an apocalyptic number.

It is an amenable number.

3908641 is a deficient number, since it is larger than the sum of its proper divisors (355343).

3908641 is a wasteful number, since it uses less digits than its factorization.

3908641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355342.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 3908641 is about 1977.0283255432. The cubic root of 3908641 is about 157.5222577094.

The spelling of 3908641 in words is "three million, nine hundred eight thousand, six hundred forty-one".