3973816 has 32 divisors (see below), whose sum is σ = 9290880. Its totient is φ = 1548000.

The previous prime is 3973811. The next prime is 3973829. The reversal of 3973816 is 6183793.

3973816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973811) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 2610 + ... + 3841.

It is an arithmetic number, because the mean of its divisors is an integer number (290340).

Almost surely, 2^3973816 is an apocalyptic number.

It is an amenable number.

3973816 is an abundant number, since it is smaller than the sum of its proper divisors (5317064).

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

3973816 is a wasteful number, since it uses less digits than its factorization.

3973816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6475 (or 6471 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 3973816 is about 1993.4432522648. The cubic root of 3973816 is about 158.3929757454.

The spelling of 3973816 in words is "three million, nine hundred seventy-three thousand, eight hundred sixteen".