426816009 has 6 divisors (see below), whose sum is σ = 616512026. Its totient is φ = 284544000.

The previous prime is 426815969. The next prime is 426816011. The reversal of 426816009 is 900618624.

426816009 is a `hidden beast` number, since 42 + 6 + 8 + 1 + 600 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 421070400 + 5745609 = 20520^2 + 2397^2 .

It is not a de Polignac number, because 426816009 - 2⁹ = 426815497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426817009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23711992 + ... + 23712009.

Almost surely, 2^426816009 is an apocalyptic number.

It is an amenable number.

426816009 is a deficient number, since it is larger than the sum of its proper divisors (189696017).

426816009 is a wasteful number, since it uses less digits than its factorization.

426816009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47424007 (or 47424004 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 426816009 is about 20659.5258658082. The cubic root of 426816009 is about 752.9166481814.

The spelling of 426816009 in words is "four hundred twenty-six million, eight hundred sixteen thousand, nine".