3965838 has 8 divisors (see below), whose sum is σ = 7931688. Its totient is φ = 1321944.

The previous prime is 3965833. The next prime is 3965839. The reversal of 3965838 is 8385693.

3965838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

3965838 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 3965838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3965833) 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 3 ways as a sum of consecutive naturals, for example, 330481 + ... + 330492.

It is an arithmetic number, because the mean of its divisors is an integer number (991461).

Almost surely, 2^3965838 is an apocalyptic number.

3965838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3965838 is a wasteful number, since it uses less digits than its factorization.

3965838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660978.

The product of its digits is 155520, while the sum is 42.

The square root of 3965838 is about 1991.4411866786. The cubic root of 3965838 is about 158.2869059321.

The spelling of 3965838 in words is "three million, nine hundred sixty-five thousand, eight hundred thirty-eight".