426646427 has 2 divisors, whose sum is σ = 426646428. Its totient is φ = 426646426.

The previous prime is 426646417. The next prime is 426646439. The reversal of 426646427 is 724646624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426646427 - 2²² = 422452123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426646417) 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, 213323213 + 213323214.

It is an arithmetic number, because the mean of its divisors is an integer number (213323214).

Almost surely, 2^426646427 is an apocalyptic number.

426646427 is a deficient number, since it is larger than the sum of its proper divisors (1).

426646427 is an equidigital number, since it uses as much as digits as its factorization.

426646427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 41.

The square root of 426646427 is about 20655.4212496381. The cubic root of 426646427 is about 752.8169190069.

The spelling of 426646427 in words is "four hundred twenty-six million, six hundred forty-six thousand, four hundred twenty-seven".