3813906 has 32 divisors (see below), whose sum is σ = 8242560. Its totient is φ = 1172864.

The previous prime is 3813893. The next prime is 3813913. The reversal of 3813906 is 6093183.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3526 + ... + 4478.

It is an arithmetic number, because the mean of its divisors is an integer number (257580).

Almost surely, 2^3813906 is an apocalyptic number.

3813906 is an abundant number, since it is smaller than the sum of its proper divisors (4428654).

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

3813906 is a wasteful number, since it uses less digits than its factorization.

3813906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010.

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

The square root of 3813906 is about 1952.9224254947. The cubic root of 3813906 is about 156.2391958396.

The spelling of 3813906 in words is "three million, eight hundred thirteen thousand, nine hundred six".