430128009 has 8 divisors (see below), whose sum is σ = 637226720. Its totient is φ = 286751988.

The previous prime is 430127981. The next prime is 430128031. The reversal of 430128009 is 900821034.

It is not a de Polignac number, because 430128009 - 2⁵ = 430127977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15930667 = 430128009 / (4 + 3 + 0 + 1 + 2 + 8 + 0 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (430128709) 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, 7965307 + ... + 7965360.

It is an arithmetic number, because the mean of its divisors is an integer number (79653340).

Almost surely, 2^430128009 is an apocalyptic number.

It is an amenable number.

430128009 is a deficient number, since it is larger than the sum of its proper divisors (207098711).

430128009 is a wasteful number, since it uses less digits than its factorization.

430128009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15930676 (or 15930670 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 430128009 is about 20739.5276947186. The cubic root of 430128009 is about 754.8591225827.

The spelling of 430128009 in words is "four hundred thirty million, one hundred twenty-eight thousand, nine".