135273779 has 2 divisors, whose sum is σ = 135273780. Its totient is φ = 135273778.

The previous prime is 135273773. The next prime is 135273791. The reversal of 135273779 is 977372531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135273779 - 2²⁴ = 118496563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135273773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67636889 + 67636890.

It is an arithmetic number, because the mean of its divisors is an integer number (67636890).

Almost surely, 2^135273779 is an apocalyptic number.

135273779 is a deficient number, since it is larger than the sum of its proper divisors (1).

135273779 is an equidigital number, since it uses as much as digits as its factorization.

135273779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277830, while the sum is 44.

The square root of 135273779 is about 11630.7256437421. The cubic root of 135273779 is about 513.3393316984.

The spelling of 135273779 in words is "one hundred thirty-five million, two hundred seventy-three thousand, seven hundred seventy-nine".