8426920069 has 2 divisors, whose sum is σ = 8426920070. Its totient is φ = 8426920068.

The previous prime is 8426920013. The next prime is 8426920093. The reversal of 8426920069 is 9600296248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8199302500 + 227617569 = 90550^2 + 15087^2 .

It is a cyclic number.

It is not a de Polignac number, because 8426920069 - 2¹⁹ = 8426395781 is a prime.

It is a super-2 number, since 2×8426920069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8426990069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4213460034 + 4213460035.

It is an arithmetic number, because the mean of its divisors is an integer number (4213460035).

Almost surely, 2^8426920069 is an apocalyptic number.

It is an amenable number.

8426920069 is a deficient number, since it is larger than the sum of its proper divisors (1).

8426920069 is an equidigital number, since it uses as much as digits as its factorization.

8426920069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 8426920069 is about 91798.2574398883. The cubic root of 8426920069 is about 2034.9619424331.

The spelling of 8426920069 in words is "eight billion, four hundred twenty-six million, nine hundred twenty thousand, sixty-nine".