3913686 has 48 divisors (see below), whose sum is σ = 9828000. Its totient is φ = 1102464.

The previous prime is 3913673. The next prime is 3913687. The reversal of 3913686 is 6863193.

It is a happy number.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 3913686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11040 + ... + 11388.

It is an arithmetic number, because the mean of its divisors is an integer number (204750).

Almost surely, 2^3913686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3913686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4914000).

3913686 is an abundant number, since it is smaller than the sum of its proper divisors (5914314).

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

3913686 is a wasteful number, since it uses less digits than its factorization.

3913686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 450 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3913686 is about 1978.3038189318. The cubic root of 3913686 is about 157.5900014700.

The spelling of 3913686 in words is "three million, nine hundred thirteen thousand, six hundred eighty-six".