8119987 has 2 divisors, whose sum is σ = 8119988. Its totient is φ = 8119986.

The previous prime is 8119981. The next prime is 8119997. The reversal of 8119987 is 7899118.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8119987 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8119981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4059993 + 4059994.

It is an arithmetic number, because the mean of its divisors is an integer number (4059994).

Almost surely, 2^8119987 is an apocalyptic number.

8119987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8119987 is an equidigital number, since it uses as much as digits as its factorization.

8119987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 43.

The square root of 8119987 is about 2849.5590887013. The cubic root of 8119987 is about 200.9949339911.

The spelling of 8119987 in words is "eight million, one hundred nineteen thousand, nine hundred eighty-seven".