426664529 has 2 divisors, whose sum is σ = 426664530. Its totient is φ = 426664528.

The previous prime is 426664523. The next prime is 426664541. The reversal of 426664529 is 925466624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359178304 + 67486225 = 18952^2 + 8215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426664529 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426664529.

It is not a weakly prime, because it can be changed into another prime (426664523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213332264 + 213332265.

It is an arithmetic number, because the mean of its divisors is an integer number (213332265).

Almost surely, 2^426664529 is an apocalyptic number.

It is an amenable number.

426664529 is a deficient number, since it is larger than the sum of its proper divisors (1).

426664529 is an equidigital number, since it uses as much as digits as its factorization.

426664529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The square root of 426664529 is about 20655.8594350368. The cubic root of 426664529 is about 752.8275658394.

The spelling of 426664529 in words is "four hundred twenty-six million, six hundred sixty-four thousand, five hundred twenty-nine".