8399977673 has 2 divisors, whose sum is σ = 8399977674. Its totient is φ = 8399977672.

The previous prime is 8399977613. The next prime is 8399977681. The reversal of 8399977673 is 3767799938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7922424064 + 477553609 = 89008^2 + 21853^2 .

It is a cyclic number.

It is not a de Polignac number, because 8399977673 - 2⁶ = 8399977609 is a prime.

It is not a weakly prime, because it can be changed into another prime (8399977613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4199988836 + 4199988837.

It is an arithmetic number, because the mean of its divisors is an integer number (4199988837).

Almost surely, 2^8399977673 is an apocalyptic number.

It is an amenable number.

8399977673 is a deficient number, since it is larger than the sum of its proper divisors (1).

8399977673 is an equidigital number, since it uses as much as digits as its factorization.

8399977673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108020304, while the sum is 68.

The square root of 8399977673 is about 91651.3920952650. The cubic root of 8399977673 is about 2032.7909125899.

The spelling of 8399977673 in words is "eight billion, three hundred ninety-nine million, nine hundred seventy-seven thousand, six hundred seventy-three".