3888805 has 4 divisors (see below), whose sum is σ = 4666572. Its totient is φ = 3111040.

The previous prime is 3888763. The next prime is 3888823. The reversal of 3888805 is 5088883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5088883 = 109 ⋅46687.

It can be written as a sum of positive squares in 2 ways, for example, as 2965284 + 923521 = 1722^2 + 961^2 .

It is not a de Polignac number, because 3888805 - 2¹⁵ = 3856037 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388876 + ... + 388885.

It is an arithmetic number, because the mean of its divisors is an integer number (1166643).

Almost surely, 2^3888805 is an apocalyptic number.

It is an amenable number.

3888805 is a deficient number, since it is larger than the sum of its proper divisors (777767).

3888805 is an equidigital number, since it uses as much as digits as its factorization.

3888805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777766.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 3888805 is about 1972.0053245364. The cubic root of 3888805 is about 157.2553352535.

The spelling of 3888805 in words is "three million, eight hundred eighty-eight thousand, eight hundred five".