426404369 has 2 divisors, whose sum is σ = 426404370. Its totient is φ = 426404368.

The previous prime is 426404311. The next prime is 426404389. The reversal of 426404369 is 963404624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 399520144 + 26884225 = 19988^2 + 5185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426404369 is a prime.

It is a super-2 number, since 2×426404369² = 363641371804576322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (426404389) 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, 213202184 + 213202185.

It is an arithmetic number, because the mean of its divisors is an integer number (213202185).

Almost surely, 2^426404369 is an apocalyptic number.

It is an amenable number.

426404369 is a deficient number, since it is larger than the sum of its proper divisors (1).

426404369 is an equidigital number, since it uses as much as digits as its factorization.

426404369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 426404369 is about 20649.5609880695. The cubic root of 426404369 is about 752.6745217594.

The spelling of 426404369 in words is "four hundred twenty-six million, four hundred four thousand, three hundred sixty-nine".