8419784287 has 2 divisors, whose sum is σ = 8419784288. Its totient is φ = 8419784286.

The previous prime is 8419784237. The next prime is 8419784299. The reversal of 8419784287 is 7824879148.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8419784287 is a prime.

It is a super-2 number, since 2×8419784287² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8419784237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4209892143 + 4209892144.

It is an arithmetic number, because the mean of its divisors is an integer number (4209892144).

Almost surely, 2^8419784287 is an apocalyptic number.

8419784287 is a deficient number, since it is larger than the sum of its proper divisors (1).

8419784287 is an equidigital number, since it uses as much as digits as its factorization.

8419784287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7225344, while the sum is 58.

The square root of 8419784287 is about 91759.3825556820. The cubic root of 8419784287 is about 2034.3873890835.

The spelling of 8419784287 in words is "eight billion, four hundred nineteen million, seven hundred eighty-four thousand, two hundred eighty-seven".