3930816 has 56 divisors (see below), whose sum is σ = 10607040. Its totient is φ = 1284352.

The previous prime is 3930811. The next prime is 3930827. The reversal of 3930816 is 6180393.

It is not an unprimeable number, because it can be changed into a prime (3930811) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11155 + ... + 11501.

Almost surely, 2^3930816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3930816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5303520).

3930816 is an abundant number, since it is smaller than the sum of its proper divisors (6676224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3930816 is a wasteful number, since it uses less digits than its factorization.

3930816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 3930816 is about 1982.6285582529. The cubic root of 3930816 is about 157.8195879116.

The spelling of 3930816 in words is "three million, nine hundred thirty thousand, eight hundred sixteen".