8039987 has 2 divisors, whose sum is σ = 8039988. Its totient is φ = 8039986.

The previous prime is 8039981. The next prime is 8040013. The reversal of 8039987 is 7899308.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8039987 - 2⁴ = 8039971 is a prime.

It is not a weakly prime, because it can be changed into another prime (8039981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4019993 + 4019994.

It is an arithmetic number, because the mean of its divisors is an integer number (4019994).

Almost surely, 2^8039987 is an apocalyptic number.

8039987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8039987 is an equidigital number, since it uses as much as digits as its factorization.

8039987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 8039987 is about 2835.4870833774. The cubic root of 8039987 is about 200.3326713421.

The spelling of 8039987 in words is "eight million, thirty-nine thousand, nine hundred eighty-seven".