135586729 has 2 divisors, whose sum is σ = 135586730. Its totient is φ = 135586728.

The previous prime is 135586709. The next prime is 135586733. The reversal of 135586729 is 927685531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76527504 + 59059225 = 8748^2 + 7685^2 .

It is an emirp because it is prime and its reverse (927685531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135586729 - 2⁷ = 135586601 is a prime.

It is a super-2 number, since 2×135586729² = 36767522161838882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135586709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67793364 + 67793365.

It is an arithmetic number, because the mean of its divisors is an integer number (67793365).

Almost surely, 2^135586729 is an apocalyptic number.

It is an amenable number.

135586729 is a deficient number, since it is larger than the sum of its proper divisors (1).

135586729 is an equidigital number, since it uses as much as digits as its factorization.

135586729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 135586729 is about 11644.1714604346. The cubic root of 135586729 is about 513.7348895535.

The spelling of 135586729 in words is "one hundred thirty-five million, five hundred eighty-six thousand, seven hundred twenty-nine".