8238211973 has 2 divisors, whose sum is σ = 8238211974. Its totient is φ = 8238211972.

The previous prime is 8238211897. The next prime is 8238211979. The reversal of 8238211973 is 3791128328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7874432644 + 363779329 = 88738^2 + 19073^2 .

It is a cyclic number.

It is not a de Polignac number, because 8238211973 - 2¹⁰ = 8238210949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8238211979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4119105986 + 4119105987.

It is an arithmetic number, because the mean of its divisors is an integer number (4119105987).

Almost surely, 2^8238211973 is an apocalyptic number.

It is an amenable number.

8238211973 is a deficient number, since it is larger than the sum of its proper divisors (1).

8238211973 is an equidigital number, since it uses as much as digits as its factorization.

8238211973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 8238211973 is about 90764.5964735149. The cubic root of 8238211973 is about 2019.6571627589.

The spelling of 8238211973 in words is "eight billion, two hundred thirty-eight million, two hundred eleven thousand, nine hundred seventy-three".