130298809 has 4 divisors (see below), whose sum is σ = 130330404. Its totient is φ = 130267216.

The previous prime is 130298807. The next prime is 130298821. The reversal of 130298809 is 908892031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30858025 + 99440784 = 5555^2 + 9972^2 .

It is a cyclic number.

It is not a de Polignac number, because 130298809 - 2¹ = 130298807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130298803) 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, 8482 + ... + 18235.

It is an arithmetic number, because the mean of its divisors is an integer number (32582601).

Almost surely, 2^130298809 is an apocalyptic number.

It is an amenable number.

130298809 is a deficient number, since it is larger than the sum of its proper divisors (31595).

130298809 is an equidigital number, since it uses as much as digits as its factorization.

130298809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31594.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 130298809 is about 11414.8503713365. The cubic root of 130298809 is about 506.9675345905.

The spelling of 130298809 in words is "one hundred thirty million, two hundred ninety-eight thousand, eight hundred nine".