8449222987 has 2 divisors, whose sum is σ = 8449222988. Its totient is φ = 8449222986.

The previous prime is 8449222981. The next prime is 8449223009. The reversal of 8449222987 is 7892229448.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8449222987 is a prime.

It is not a weakly prime, because it can be changed into another prime (8449222981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4224611493 + 4224611494.

It is an arithmetic number, because the mean of its divisors is an integer number (4224611494).

Almost surely, 2^8449222987 is an apocalyptic number.

8449222987 is a deficient number, since it is larger than the sum of its proper divisors (1).

8449222987 is an equidigital number, since it uses as much as digits as its factorization.

8449222987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 55.

The square root of 8449222987 is about 91919.6550635390. The cubic root of 8449222987 is about 2036.7556230088.

The spelling of 8449222987 in words is "eight billion, four hundred forty-nine million, two hundred twenty-two thousand, nine hundred eighty-seven".