8485221487 has 2 divisors, whose sum is σ = 8485221488. Its totient is φ = 8485221486.

The previous prime is 8485221449. The next prime is 8485221517. The reversal of 8485221487 is 7841225848.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8485221487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8485221487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8485221287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4242610743 + 4242610744.

It is an arithmetic number, because the mean of its divisors is an integer number (4242610744).

Almost surely, 2^8485221487 is an apocalyptic number.

8485221487 is a deficient number, since it is larger than the sum of its proper divisors (1).

8485221487 is an equidigital number, since it uses as much as digits as its factorization.

8485221487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1146880, while the sum is 49.

The square root of 8485221487 is about 92115.2619656482. The cubic root of 8485221487 is about 2039.6441041807.

The spelling of 8485221487 in words is "eight billion, four hundred eighty-five million, two hundred twenty-one thousand, four hundred eighty-seven".