426783397 has 2 divisors, whose sum is σ = 426783398. Its totient is φ = 426783396.

The previous prime is 426783347. The next prime is 426783431. The reversal of 426783397 is 793387624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282038436 + 144744961 = 16794^2 + 12031^2 .

It is a cyclic number.

It is not a de Polignac number, because 426783397 - 2¹¹ = 426781349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426783397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426783347) 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, 213391698 + 213391699.

It is an arithmetic number, because the mean of its divisors is an integer number (213391699).

Almost surely, 2^426783397 is an apocalyptic number.

It is an amenable number.

426783397 is a deficient number, since it is larger than the sum of its proper divisors (1).

426783397 is an equidigital number, since it uses as much as digits as its factorization.

426783397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The square root of 426783397 is about 20658.7365780195. The cubic root of 426783397 is about 752.8974715006.

The spelling of 426783397 in words is "four hundred twenty-six million, seven hundred eighty-three thousand, three hundred ninety-seven".