3885811 has 4 divisors (see below), whose sum is σ = 3932712. Its totient is φ = 3838912.

The previous prime is 3885803. The next prime is 3885821. The reversal of 3885811 is 1185883.

3885811 = T₁₂₈ + T₁₂₉ + ... + T₂₉₃.

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

It is a cyclic number.

It is not a de Polignac number, because 3885811 - 2³ = 3885803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3885821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23326 + ... + 23491.

It is an arithmetic number, because the mean of its divisors is an integer number (983178).

Almost surely, 2^3885811 is an apocalyptic number.

3885811 is a deficient number, since it is larger than the sum of its proper divisors (46901).

3885811 is an equidigital number, since it uses as much as digits as its factorization.

3885811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46900.

The product of its digits is 7680, while the sum is 34.

The square root of 3885811 is about 1971.2460526276. The cubic root of 3885811 is about 157.2149678095.

It can be divided in two parts, 38 and 85811, that added together give a square (85849 = 293²).

The spelling of 3885811 in words is "three million, eight hundred eighty-five thousand, eight hundred eleven".