426009 has 8 divisors (see below), whose sum is σ = 571552. Its totient is φ = 282240.

The previous prime is 426007. The next prime is 426011. The reversal of 426009 is 900624.

It is an interprime number because it is at equal distance from previous prime (426007) and next prime (426011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 426009 - 2¹ = 426007 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 426009.

It is not an unprimeable number, because it can be changed into a prime (426007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297 + ... + 969.

It is an arithmetic number, because the mean of its divisors is an integer number (71444).

2⁴²⁶⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

426009 is a deficient number, since it is larger than the sum of its proper divisors (145543).

426009 is a wasteful number, since it uses less digits than its factorization.

426009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 426009 is about 652.6936494252. The cubic root of 426009 is about 75.2441819176.

The spelling of 426009 in words is "four hundred twenty-six thousand, nine".