3886813 has 16 divisors (see below), whose sum is σ = 4681600. Its totient is φ = 3157056.

The previous prime is 3886801. The next prime is 3886819. The reversal of 3886813 is 3186883.

It is not a de Polignac number, because 3886813 - 2¹³ = 3878621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is the 1972-nd Hogben number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3886819) by changing a digit.

It is a nontrivial repunit in base 1971.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10963 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (292600).

Almost surely, 2^3886813 is an apocalyptic number.

It is an amenable number.

3886813 is a deficient number, since it is larger than the sum of its proper divisors (794787).

3886813 is a wasteful number, since it uses less digits than its factorization.

3886813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436.

The product of its digits is 27648, while the sum is 37.

The square root of 3886813 is about 1971.5001902105. The cubic root of 3886813 is about 157.2284798631.

The spelling of 3886813 in words is "three million, eight hundred eighty-six thousand, eight hundred thirteen".