426926009 has 2 divisors, whose sum is σ = 426926010. Its totient is φ = 426926008.

The previous prime is 426925963. The next prime is 426926011. The reversal of 426926009 is 900629624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 424236409 + 2689600 = 20597^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 426926009 - 2⁸ = 426925753 is a prime.

Together with 426926011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (426926209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213463004 + 213463005.

It is an arithmetic number, because the mean of its divisors is an integer number (213463005).

Almost surely, 2^426926009 is an apocalyptic number.

It is an amenable number.

426926009 is a deficient number, since it is larger than the sum of its proper divisors (1).

426926009 is an equidigital number, since it uses as much as digits as its factorization.

426926009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 426926009 is about 20662.1879044790. The cubic root of 426926009 is about 752.9813237603.

The spelling of 426926009 in words is "four hundred twenty-six million, nine hundred twenty-six thousand, nine".