130639279 has 2 divisors, whose sum is σ = 130639280. Its totient is φ = 130639278.

The previous prime is 130639277. The next prime is 130639291. The reversal of 130639279 is 972936031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130639279 - 2¹ = 130639277 is a prime.

Together with 130639277, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130639277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65319639 + 65319640.

It is an arithmetic number, because the mean of its divisors is an integer number (65319640).

Almost surely, 2^130639279 is an apocalyptic number.

130639279 is a deficient number, since it is larger than the sum of its proper divisors (1).

130639279 is an equidigital number, since it uses as much as digits as its factorization.

130639279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 130639279 is about 11429.7541093411. The cubic root of 130639279 is about 507.4087182441.

The spelling of 130639279 in words is "one hundred thirty million, six hundred thirty-nine thousand, two hundred seventy-nine".