298247987 has 2 divisors, whose sum is σ = 298247988. Its totient is φ = 298247986.

The previous prime is 298247941. The next prime is 298248001. The reversal of 298247987 is 789742892.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-298247987 is a prime.

It is not a weakly prime, because it can be changed into another prime (298247927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 149123993 + 149123994.

It is an arithmetic number, because the mean of its divisors is an integer number (149123994).

Almost surely, 2^298247987 is an apocalyptic number.

298247987 is a deficient number, since it is larger than the sum of its proper divisors (1).

298247987 is an equidigital number, since it uses as much as digits as its factorization.

298247987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 298247987 is about 17269.8577585341. The cubic root of 298247987 is about 668.1272324789.

The spelling of 298247987 in words is "two hundred ninety-eight million, two hundred forty-seven thousand, nine hundred eighty-seven".