8398236481 has 2 divisors, whose sum is σ = 8398236482. Its totient is φ = 8398236480.

The previous prime is 8398236461. The next prime is 8398236499. The reversal of 8398236481 is 1846328938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6559542081 + 1838694400 = 80991^2 + 42880^2 .

It is a cyclic number.

It is not a de Polignac number, because 8398236481 - 2¹⁵ = 8398203713 is a prime.

It is a super-2 number, since 2×8398236481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8398236461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4199118240 + 4199118241.

It is an arithmetic number, because the mean of its divisors is an integer number (4199118241).

Almost surely, 2^8398236481 is an apocalyptic number.

It is an amenable number.

8398236481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8398236481 is an equidigital number, since it uses as much as digits as its factorization.

8398236481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 52.

The square root of 8398236481 is about 91641.8926092210. The cubic root of 8398236481 is about 2032.6504469839.

The spelling of 8398236481 in words is "eight billion, three hundred ninety-eight million, two hundred thirty-six thousand, four hundred eighty-one".