3827881 has 2 divisors, whose sum is σ = 3827882. Its totient is φ = 3827880.

The previous prime is 3827869. The next prime is 3827893. The reversal of 3827881 is 1887283.

3827881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (3827869) and next prime (3827893).

It can be written as a sum of positive squares in only one way, i.e., 2202256 + 1625625 = 1484^2 + 1275^2 .

It is an emirp because it is prime and its reverse (1887283) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3827881 is a prime.

It is a super-2 number, since 2×3827881² = 29305345900322, which contains 22 as substring.

3827881 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3827881.

It is not a weakly prime, because it can be changed into another prime (3827381) 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 as a sum of consecutive naturals, namely, 1913940 + 1913941.

It is an arithmetic number, because the mean of its divisors is an integer number (1913941).

Almost surely, 2^3827881 is an apocalyptic number.

It is an amenable number.

3827881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3827881 is an equidigital number, since it uses as much as digits as its factorization.

3827881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 37.

The square root of 3827881 is about 1956.4971249659. The cubic root of 3827881 is about 156.4297949528.

The spelling of 3827881 in words is "three million, eight hundred twenty-seven thousand, eight hundred eighty-one".