8729430009 has 32 divisors (see below), whose sum is σ = 11977770240. Its totient is φ = 5653444608.

The previous prime is 8729430001. The next prime is 8729430023. The reversal of 8729430009 is 9000349278.

It is not a de Polignac number, because 8729430009 - 2³ = 8729430001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8729430001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4280212 + ... + 4282250.

It is an arithmetic number, because the mean of its divisors is an integer number (374305320).

Almost surely, 2^8729430009 is an apocalyptic number.

It is an amenable number.

8729430009 is a deficient number, since it is larger than the sum of its proper divisors (3248340231).

8729430009 is a wasteful number, since it uses less digits than its factorization.

8729430009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 8729430009 is about 93431.4187465865. The cubic root of 8729430009 is about 2059.0266247701.

The spelling of 8729430009 in words is "eight billion, seven hundred twenty-nine million, four hundred thirty thousand, nine".