3909688 has 8 divisors (see below), whose sum is σ = 7330680. Its totient is φ = 1954840.

The previous prime is 3909671. The next prime is 3909691. The reversal of 3909688 is 8869093.

3909688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244348 + ... + 244363.

It is an arithmetic number, because the mean of its divisors is an integer number (916335).

Almost surely, 2^3909688 is an apocalyptic number.

It is an amenable number.

3909688 is a deficient number, since it is larger than the sum of its proper divisors (3420992).

3909688 is a wasteful number, since it uses less digits than its factorization.

3909688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488717 (or 488713 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 3909688 is about 1977.2930991636. The cubic root of 3909688 is about 157.5363215131.

The spelling of 3909688 in words is "three million, nine hundred nine thousand, six hundred eighty-eight".