3859816 has 32 divisors (see below), whose sum is σ = 7766280. Its totient is φ = 1792000.

The previous prime is 3859789. The next prime is 3859819. The reversal of 3859816 is 6189583.

It is a happy number.

3859816 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3786916 + 72900 = 1946^2 + 270^2 .

Its product of digits (51840) is a multiple of the sum of its prime factors (405).

It is not an unprimeable number, because it can be changed into a prime (3859819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13596 + ... + 13876.

Almost surely, 2^3859816 is an apocalyptic number.

It is an amenable number.

3859816 is an abundant number, since it is smaller than the sum of its proper divisors (3906464).

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

3859816 is a wasteful number, since it uses less digits than its factorization.

3859816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405 (or 401 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The square root of 3859816 is about 1964.6414431137. The cubic root of 3859816 is about 156.8636082689.

It can be divided in two parts, 385 and 9816, that added together give a palindrome (10201).

The spelling of 3859816 in words is "three million, eight hundred fifty-nine thousand, eight hundred sixteen".