3877987 has 2 divisors, whose sum is σ = 3877988. Its totient is φ = 3877986.

The previous prime is 3877943. The next prime is 3877999. The reversal of 3877987 is 7897783.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7897783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3877987 - 2¹¹ = 3875939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3877987.

It is not a weakly prime, because it can be changed into another prime (3877927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1938993 + 1938994.

It is an arithmetic number, because the mean of its divisors is an integer number (1938994).

Almost surely, 2^3877987 is an apocalyptic number.

3877987 is a deficient number, since it is larger than the sum of its proper divisors (1).

3877987 is an equidigital number, since it uses as much as digits as its factorization.

3877987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 49.

The square root of 3877987 is about 1969.2605211094. The cubic root of 3877987 is about 157.1093805509.

The spelling of 3877987 in words is "three million, eight hundred seventy-seven thousand, nine hundred eighty-seven".