3858813 has 32 divisors (see below), whose sum is σ = 6923520. Its totient is φ = 2073600.

The previous prime is 3858793. The next prime is 3858817. The reversal of 3858813 is 3188583.

It is a happy number.

It is not a de Polignac number, because 3858813 - 2⁵ = 3858781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3858817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2613 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (216360).

Almost surely, 2^3858813 is an apocalyptic number.

It is an amenable number.

3858813 is a deficient number, since it is larger than the sum of its proper divisors (3064707).

3858813 is a wasteful number, since it uses less digits than its factorization.

3858813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1234 (or 1228 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 3858813 is about 1964.3861636654. The cubic root of 3858813 is about 156.8500197258.

The spelling of 3858813 in words is "three million, eight hundred fifty-eight thousand, eight hundred thirteen".