130509139 has 4 divisors (see below), whose sum is σ = 130602024. Its totient is φ = 130416256.

The previous prime is 130509133. The next prime is 130509167. The reversal of 130509139 is 931905031.

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

It is a cyclic number.

It is not a de Polignac number, because 130509139 - 2³ = 130509131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130509139.

It is not an unprimeable number, because it can be changed into a prime (130509131) 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, 44302 + ... + 47155.

It is an arithmetic number, because the mean of its divisors is an integer number (32650506).

Almost surely, 2^130509139 is an apocalyptic number.

130509139 is a deficient number, since it is larger than the sum of its proper divisors (92885).

130509139 is an equidigital number, since it uses as much as digits as its factorization.

130509139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92884.

The product of its (nonzero) digits is 3645, while the sum is 31.

The square root of 130509139 is about 11424.0596549563. The cubic root of 130509139 is about 507.2401724322.

The spelling of 130509139 in words is "one hundred thirty million, five hundred nine thousand, one hundred thirty-nine".