134579309 has 2 divisors, whose sum is σ = 134579310. Its totient is φ = 134579308.

The previous prime is 134579287. The next prime is 134579317. The reversal of 134579309 is 903975431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79032100 + 55547209 = 8890^2 + 7453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134579309 is a prime.

It is a super-2 number, since 2×134579309² = 36223180821834962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134579909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67289654 + 67289655.

It is an arithmetic number, because the mean of its divisors is an integer number (67289655).

Almost surely, 2^134579309 is an apocalyptic number.

It is an amenable number.

134579309 is a deficient number, since it is larger than the sum of its proper divisors (1).

134579309 is an equidigital number, since it uses as much as digits as its factorization.

134579309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 134579309 is about 11600.8322546273. The cubic root of 134579309 is about 512.4593617589.

The spelling of 134579309 in words is "one hundred thirty-four million, five hundred seventy-nine thousand, three hundred nine".