3887839 has 2 divisors, whose sum is σ = 3887840. Its totient is φ = 3887838.

The previous prime is 3887831. The next prime is 3887843. The reversal of 3887839 is 9387883.

It is a strong prime.

It is an emirp because it is prime and its reverse (9387883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3887839 - 2³ = 3887831 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3887831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1943919 + 1943920.

It is an arithmetic number, because the mean of its divisors is an integer number (1943920).

Almost surely, 2^3887839 is an apocalyptic number.

3887839 is a deficient number, since it is larger than the sum of its proper divisors (1).

3887839 is an equidigital number, since it uses as much as digits as its factorization.

3887839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 3887839 is about 1971.7603809794. The cubic root of 3887839 is about 157.2423131526.

The spelling of 3887839 in words is "three million, eight hundred eighty-seven thousand, eight hundred thirty-nine".