426665089 has 2 divisors, whose sum is σ = 426665090. Its totient is φ = 426665088.

The previous prime is 426665077. The next prime is 426665101. The reversal of 426665089 is 980566624.

It is a balanced prime because it is at equal distance from previous prime (426665077) and next prime (426665101).

It can be written as a sum of positive squares in only one way, i.e., 420455025 + 6210064 = 20505^2 + 2492^2 .

It is a cyclic number.

It is not a de Polignac number, because 426665089 - 2¹³ = 426656897 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426665189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213332544 + 213332545.

It is an arithmetic number, because the mean of its divisors is an integer number (213332545).

Almost surely, 2^426665089 is an apocalyptic number.

It is an amenable number.

426665089 is a deficient number, since it is larger than the sum of its proper divisors (1).

426665089 is an equidigital number, since it uses as much as digits as its factorization.

426665089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 46.

The square root of 426665089 is about 20655.8729905081. The cubic root of 426665089 is about 752.8278952029.

The spelling of 426665089 in words is "four hundred twenty-six million, six hundred sixty-five thousand, eighty-nine".