423475809 has 4 divisors (see below), whose sum is σ = 564634416. Its totient is φ = 282317204.

The previous prime is 423475807. The next prime is 423475837. The reversal of 423475809 is 908574324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423475809 - 2¹ = 423475807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423475807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70579299 + ... + 70579304.

It is an arithmetic number, because the mean of its divisors is an integer number (141158604).

Almost surely, 2^423475809 is an apocalyptic number.

It is an amenable number.

423475809 is a deficient number, since it is larger than the sum of its proper divisors (141158607).

423475809 is a wasteful number, since it uses less digits than its factorization.

423475809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141158606.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 423475809 is about 20578.5278627991. The cubic root of 423475809 is about 750.9474302196.

The spelling of 423475809 in words is "four hundred twenty-three million, four hundred seventy-five thousand, eight hundred nine".