426565417 has 2 divisors, whose sum is σ = 426565418. Its totient is φ = 426565416.

The previous prime is 426565397. The next prime is 426565427. The reversal of 426565417 is 714565624.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385297641 + 41267776 = 19629^2 + 6424^2 .

It is a cyclic number.

It is not a de Polignac number, because 426565417 - 2²⁷ = 292347689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426565417.

It is not a weakly prime, because it can be changed into another prime (426565427) 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, 213282708 + 213282709.

It is an arithmetic number, because the mean of its divisors is an integer number (213282709).

Almost surely, 2^426565417 is an apocalyptic number.

It is an amenable number.

426565417 is a deficient number, since it is larger than the sum of its proper divisors (1).

426565417 is an equidigital number, since it uses as much as digits as its factorization.

426565417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 40.

The square root of 426565417 is about 20653.4601701507. The cubic root of 426565417 is about 752.7692686536.

The spelling of 426565417 in words is "four hundred twenty-six million, five hundred sixty-five thousand, four hundred seventeen".