130439305 has 4 divisors (see below), whose sum is σ = 156527172. Its totient is φ = 104351440.

The previous prime is 130439299. The next prime is 130439311. The reversal of 130439305 is 503934031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 503934031 = 233 ⋅2162807.

It is an interprime number because it is at equal distance from previous prime (130439299) and next prime (130439311).

It can be written as a sum of positive squares in 2 ways, for example, as 47045881 + 83393424 = 6859^2 + 9132^2 .

It is not a de Polignac number, because 130439305 - 2³ = 130439297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13043926 + ... + 13043935.

It is an arithmetic number, because the mean of its divisors is an integer number (39131793).

Almost surely, 2^130439305 is an apocalyptic number.

It is an amenable number.

130439305 is a deficient number, since it is larger than the sum of its proper divisors (26087867).

130439305 is an equidigital number, since it uses as much as digits as its factorization.

130439305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26087866.

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 130439305 is about 11421.0028018559. The cubic root of 130439305 is about 507.1496834176.

The spelling of 130439305 in words is "one hundred thirty million, four hundred thirty-nine thousand, three hundred five".