3909868 has 12 divisors (see below), whose sum is σ = 6929440. Its totient is φ = 1930032.

The previous prime is 3909853. The next prime is 3909889. The reversal of 3909868 is 8689093.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5871 + ... + 6502.

Almost surely, 2^3909868 is an apocalyptic number.

It is an amenable number.

3909868 is a deficient number, since it is larger than the sum of its proper divisors (3019572).

3909868 is a wasteful number, since it uses less digits than its factorization.

3909868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12456 (or 12454 counting only the distinct ones).

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

The square root of 3909868 is about 1977.3386154121. The cubic root of 3909868 is about 157.5387391061.

The spelling of 3909868 in words is "three million, nine hundred nine thousand, eight hundred sixty-eight".