130639277 has 2 divisors, whose sum is σ = 130639278. Its totient is φ = 130639276.

The previous prime is 130639217. The next prime is 130639279. The reversal of 130639277 is 772936031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124233316 + 6405961 = 11146^2 + 2531^2 .

It is a cyclic number.

It is not a de Polignac number, because 130639277 - 2⁸ = 130639021 is a prime.

Together with 130639279, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130639277.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130639279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65319638 + 65319639.

It is an arithmetic number, because the mean of its divisors is an integer number (65319639).

Almost surely, 2^130639277 is an apocalyptic number.

It is an amenable number.

130639277 is a deficient number, since it is larger than the sum of its proper divisors (1).

130639277 is an equidigital number, since it uses as much as digits as its factorization.

130639277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 38.

The square root of 130639277 is about 11429.7540218502. The cubic root of 130639277 is about 507.4087156547.

The spelling of 130639277 in words is "one hundred thirty million, six hundred thirty-nine thousand, two hundred seventy-seven".