3853805 has 4 divisors (see below), whose sum is σ = 4624572. Its totient is φ = 3083040.

The previous prime is 3853793. The next prime is 3853813. The reversal of 3853805 is 5083583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5083583 = 19 ⋅267557.

It can be written as a sum of positive squares in 2 ways, for example, as 2301289 + 1552516 = 1517^2 + 1246^2 .

It is not a de Polignac number, because 3853805 - 2⁶ = 3853741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385376 + ... + 385385.

It is an arithmetic number, because the mean of its divisors is an integer number (1156143).

Almost surely, 2^3853805 is an apocalyptic number.

It is an amenable number.

3853805 is a deficient number, since it is larger than the sum of its proper divisors (770767).

3853805 is an equidigital number, since it uses as much as digits as its factorization.

3853805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770766.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 3853805 is about 1963.1110513672. Note that the first 3 decimals coincide. The cubic root of 3853805 is about 156.7821365921.

The spelling of 3853805 in words is "three million, eight hundred fifty-three thousand, eight hundred five".