3811867 has 4 divisors (see below), whose sum is σ = 3837600. Its totient is φ = 3786136.

The previous prime is 3811817. The next prime is 3811877. The reversal of 3811867 is 7681183.

3811867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7681183 = 439 ⋅17497.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3811867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3811817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12643 + ... + 12940.

It is an arithmetic number, because the mean of its divisors is an integer number (959400).

Almost surely, 2^3811867 is an apocalyptic number.

3811867 is a deficient number, since it is larger than the sum of its proper divisors (25733).

3811867 is a wasteful number, since it uses less digits than its factorization.

3811867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25732.

The product of its digits is 8064, while the sum is 34.

The square root of 3811867 is about 1952.4003175579. The cubic root of 3811867 is about 156.2113478793.

The spelling of 3811867 in words is "three million, eight hundred eleven thousand, eight hundred sixty-seven".