130609979 has 2 divisors, whose sum is σ = 130609980. Its totient is φ = 130609978.

The previous prime is 130609961. The next prime is 130609987. The reversal of 130609979 is 979906031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130609979 is a prime.

It is a super-2 number, since 2×130609979² = 34117933228760882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (130609949) 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, 65304989 + 65304990.

It is an arithmetic number, because the mean of its divisors is an integer number (65304990).

Almost surely, 2^130609979 is an apocalyptic number.

130609979 is a deficient number, since it is larger than the sum of its proper divisors (1).

130609979 is an equidigital number, since it uses as much as digits as its factorization.

130609979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91854, while the sum is 44.

The square root of 130609979 is about 11428.4722951058. The cubic root of 130609979 is about 507.3707812439.

The spelling of 130609979 in words is "one hundred thirty million, six hundred nine thousand, nine hundred seventy-nine".