426944393 has 2 divisors, whose sum is σ = 426944394. Its totient is φ = 426944392.

The previous prime is 426944359. The next prime is 426944407. The reversal of 426944393 is 393449624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272514064 + 154430329 = 16508^2 + 12427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426944393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426944093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213472196 + 213472197.

It is an arithmetic number, because the mean of its divisors is an integer number (213472197).

Almost surely, 2^426944393 is an apocalyptic number.

It is an amenable number.

426944393 is a deficient number, since it is larger than the sum of its proper divisors (1).

426944393 is an equidigital number, since it uses as much as digits as its factorization.

426944393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 44.

The square root of 426944393 is about 20662.6327702933. The cubic root of 426944393 is about 752.9921317299.

The spelling of 426944393 in words is "four hundred twenty-six million, nine hundred forty-four thousand, three hundred ninety-three".