426630493 has 2 divisors, whose sum is σ = 426630494. Its totient is φ = 426630492.

The previous prime is 426630481. The next prime is 426630539. The reversal of 426630493 is 394036624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381108484 + 45522009 = 19522^2 + 6747^2 .

It is a cyclic number.

It is not a de Polignac number, because 426630493 - 2⁹ = 426629981 is a prime.

It is equal to p_22678615 and since 426630493 and 22678615 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426630433) 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, 213315246 + 213315247.

It is an arithmetic number, because the mean of its divisors is an integer number (213315247).

Almost surely, 2^426630493 is an apocalyptic number.

It is an amenable number.

426630493 is a deficient number, since it is larger than the sum of its proper divisors (1).

426630493 is an equidigital number, since it uses as much as digits as its factorization.

426630493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 426630493 is about 20655.0355361592. The cubic root of 426630493 is about 752.8075470513.

The spelling of 426630493 in words is "four hundred twenty-six million, six hundred thirty thousand, four hundred ninety-three".