3884605 has 4 divisors (see below), whose sum is σ = 4661532. Its totient is φ = 3107680.

The previous prime is 3884591. The next prime is 3884609. The reversal of 3884605 is 5064883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 974169 + 2910436 = 987^2 + 1706^2 .

It is not a de Polignac number, because 3884605 - 2⁹ = 3884093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3884609) by changing a digit.

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, 388456 + ... + 388465.

It is an arithmetic number, because the mean of its divisors is an integer number (1165383).

Almost surely, 2^3884605 is an apocalyptic number.

It is an amenable number.

3884605 is a deficient number, since it is larger than the sum of its proper divisors (776927).

3884605 is an equidigital number, since it uses as much as digits as its factorization.

3884605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776926.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 3884605 is about 1970.9401310035. The cubic root of 3884605 is about 157.1987017182.

It can be divided in two parts, 3884 and 605, that added together give a square (4489 = 67²).

The spelling of 3884605 in words is "three million, eight hundred eighty-four thousand, six hundred five".