426667783 has 2 divisors, whose sum is σ = 426667784. Its totient is φ = 426667782.

The previous prime is 426667729. The next prime is 426667823. The reversal of 426667783 is 387766624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426667783 - 2⁹ = 426667271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426667583) 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, 213333891 + 213333892.

It is an arithmetic number, because the mean of its divisors is an integer number (213333892).

Almost surely, 2^426667783 is an apocalyptic number.

426667783 is a deficient number, since it is larger than the sum of its proper divisors (1).

426667783 is an equidigital number, since it uses as much as digits as its factorization.

426667783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 49.

The square root of 426667783 is about 20655.9382018828. The cubic root of 426667783 is about 752.8294796729.

The spelling of 426667783 in words is "four hundred twenty-six million, six hundred sixty-seven thousand, seven hundred eighty-three".