8422686749 has 2 divisors, whose sum is σ = 8422686750. Its totient is φ = 8422686748.

The previous prime is 8422686709. The next prime is 8422686773. The reversal of 8422686749 is 9476862248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5463870724 + 2958816025 = 73918^2 + 54395^2 .

It is a cyclic number.

It is not a de Polignac number, because 8422686749 - 2¹⁶ = 8422621213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8422686694 and 8422686703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8422686709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4211343374 + 4211343375.

It is an arithmetic number, because the mean of its divisors is an integer number (4211343375).

Almost surely, 2^8422686749 is an apocalyptic number.

It is an amenable number.

8422686749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8422686749 is an equidigital number, since it uses as much as digits as its factorization.

8422686749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9289728, while the sum is 56.

The square root of 8422686749 is about 91775.1968071984. The cubic root of 8422686749 is about 2034.6211264148.

The spelling of 8422686749 in words is "eight billion, four hundred twenty-two million, six hundred eighty-six thousand, seven hundred forty-nine".