8541984247 has 2 divisors, whose sum is σ = 8541984248. Its totient is φ = 8541984246.

The previous prime is 8541984173. The next prime is 8541984263. The reversal of 8541984247 is 7424891458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8541984247 - 2⁷ = 8541984119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8541984194 and 8541984203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8541984277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270992123 + 4270992124.

It is an arithmetic number, because the mean of its divisors is an integer number (4270992124).

Almost surely, 2^8541984247 is an apocalyptic number.

8541984247 is a deficient number, since it is larger than the sum of its proper divisors (1).

8541984247 is an equidigital number, since it uses as much as digits as its factorization.

8541984247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2580480, while the sum is 52.

The square root of 8541984247 is about 92422.8556527010. The cubic root of 8541984247 is about 2044.1821361532.

The spelling of 8541984247 in words is "eight billion, five hundred forty-one million, nine hundred eighty-four thousand, two hundred forty-seven".