8956719973 has 2 divisors, whose sum is σ = 8956719974. Its totient is φ = 8956719972.

The previous prime is 8956719971. The next prime is 8956719979. The reversal of 8956719973 is 3799176598.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8096940289 + 859779684 = 89983^2 + 29322^2 .

It is a cyclic number.

It is not a de Polignac number, because 8956719973 - 2¹ = 8956719971 is a prime.

Together with 8956719971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8956719971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4478359986 + 4478359987.

It is an arithmetic number, because the mean of its divisors is an integer number (4478359987).

Almost surely, 2^8956719973 is an apocalyptic number.

It is an amenable number.

8956719973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8956719973 is an equidigital number, since it uses as much as digits as its factorization.

8956719973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25719120, while the sum is 64.

The square root of 8956719973 is about 94639.9491388283. The cubic root of 8956719973 is about 2076.7441645568.

The spelling of 8956719973 in words is "eight billion, nine hundred fifty-six million, seven hundred nineteen thousand, nine hundred seventy-three".