136293779 has 2 divisors, whose sum is σ = 136293780. Its totient is φ = 136293778.

The previous prime is 136293767. The next prime is 136293797. The reversal of 136293779 is 977392631.

It is a happy number.

Together with next prime (136293797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (977392631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136293779 - 2⁸ = 136293523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136293739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68146889 + 68146890.

It is an arithmetic number, because the mean of its divisors is an integer number (68146890).

Almost surely, 2^136293779 is an apocalyptic number.

136293779 is a deficient number, since it is larger than the sum of its proper divisors (1).

136293779 is an equidigital number, since it uses as much as digits as its factorization.

136293779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 47.

The square root of 136293779 is about 11674.4926656365. The cubic root of 136293779 is about 514.6263403235.

The spelling of 136293779 in words is "one hundred thirty-six million, two hundred ninety-three thousand, seven hundred seventy-nine".