841199987 has 2 divisors, whose sum is σ = 841199988. Its totient is φ = 841199986.

The previous prime is 841199981. The next prime is 841200007. The reversal of 841199987 is 789991148.

841199987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 841199987 - 2⁶ = 841199923 is a prime.

It is not a weakly prime, because it can be changed into another prime (841199981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420599993 + 420599994.

It is an arithmetic number, because the mean of its divisors is an integer number (420599994).

Almost surely, 2^841199987 is an apocalyptic number.

841199987 is a deficient number, since it is larger than the sum of its proper divisors (1).

841199987 is an equidigital number, since it uses as much as digits as its factorization.

841199987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 56.

The square root of 841199987 is about 29003.4478467647. The cubic root of 841199987 is about 943.9878816043.

The spelling of 841199987 in words is "eight hundred forty-one million, one hundred ninety-nine thousand, nine hundred eighty-seven".