426565493 has 2 divisors, whose sum is σ = 426565494. Its totient is φ = 426565492.

The previous prime is 426565481. The next prime is 426565511. The reversal of 426565493 is 394565624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 231739729 + 194825764 = 15223^2 + 13958^2 .

It is a cyclic number.

It is not a de Polignac number, because 426565493 - 2²² = 422371189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426565463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213282746 + 213282747.

It is an arithmetic number, because the mean of its divisors is an integer number (213282747).

Almost surely, 2^426565493 is an apocalyptic number.

It is an amenable number.

426565493 is a deficient number, since it is larger than the sum of its proper divisors (1).

426565493 is an equidigital number, since it uses as much as digits as its factorization.

426565493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 44.

The square root of 426565493 is about 20653.4620100360. The cubic root of 426565493 is about 752.7693133599.

The spelling of 426565493 in words is "four hundred twenty-six million, five hundred sixty-five thousand, four hundred ninety-three".