3905816 has 8 divisors (see below), whose sum is σ = 7323420. Its totient is φ = 1952904.

The previous prime is 3905809. The next prime is 3905833. The reversal of 3905816 is 6185093.

3905816 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, 244106 + ... + 244121.

Almost surely, 2^3905816 is an apocalyptic number.

It is an amenable number.

3905816 is a deficient number, since it is larger than the sum of its proper divisors (3417604).

3905816 is a wasteful number, since it uses less digits than its factorization.

3905816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488233 (or 488229 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 3905816 is about 1976.3137402751. The cubic root of 3905816 is about 157.4842984263.

The spelling of 3905816 in words is "three million, nine hundred five thousand, eight hundred sixteen".