3870811 has 8 divisors (see below), whose sum is σ = 4437504. Its totient is φ = 3307560.

The previous prime is 3870803. The next prime is 3870821. The reversal of 3870811 is 1180783.

It is a happy number.

3870811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3870811 - 2³ = 3870803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3870811.

It is not an unprimeable number, because it can be changed into a prime (3870821) 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 7 ways as a sum of consecutive naturals, for example, 2376 + ... + 3658.

It is an arithmetic number, because the mean of its divisors is an integer number (554688).

Almost surely, 2^3870811 is an apocalyptic number.

3870811 is a deficient number, since it is larger than the sum of its proper divisors (566693).

3870811 is a wasteful number, since it uses less digits than its factorization.

3870811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 3870811 is about 1967.4376737269. The cubic root of 3870811 is about 157.0124133152.

Subtracting from 3870811 its sum of digits (28), we obtain a palindrome (3870783).

The spelling of 3870811 in words is "three million, eight hundred seventy thousand, eight hundred eleven".