130000009 has 2 divisors, whose sum is σ = 130000010. Its totient is φ = 130000008.

The previous prime is 130000007. The next prime is 130000027. The reversal of 130000009 is 900000031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108097609 + 21902400 = 10397^2 + 4680^2 .

It is a cyclic number.

It is not a de Polignac number, because 130000009 - 2¹ = 130000007 is a prime.

Together with 130000007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (130000001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65000004 + 65000005.

It is an arithmetic number, because the mean of its divisors is an integer number (65000005).

Almost surely, 2^130000009 is an apocalyptic number.

It is an amenable number.

130000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

130000009 is an equidigital number, since it uses as much as digits as its factorization.

130000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 130000009 is about 11401.7546456675. The cubic root of 130000009 is about 506.5797136004.

The spelling of 130000009 in words is "one hundred thirty million, nine", and thus it is an aban number.