426303809 has 8 divisors (see below), whose sum is σ = 433711872. Its totient is φ = 418934880.

The previous prime is 426303803. The next prime is 426303833. The reversal of 426303809 is 908303624.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426303809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (426303803) 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, 12632 + ... + 31814.

It is an arithmetic number, because the mean of its divisors is an integer number (54213984).

Almost surely, 2^426303809 is an apocalyptic number.

It is an amenable number.

426303809 is a deficient number, since it is larger than the sum of its proper divisors (7408063).

426303809 is a wasteful number, since it uses less digits than its factorization.

426303809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19567.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 426303809 is about 20647.1259259007. The cubic root of 426303809 is about 752.6153487411.

The spelling of 426303809 in words is "four hundred twenty-six million, three hundred three thousand, eight hundred nine".