135936979 has 2 divisors, whose sum is σ = 135936980. Its totient is φ = 135936978.

The previous prime is 135936971. The next prime is 135936989. The reversal of 135936979 is 979639531.

135936979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135936979 - 2³ = 135936971 is a prime.

It is not a weakly prime, because it can be changed into another prime (135936971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67968489 + 67968490.

It is an arithmetic number, because the mean of its divisors is an integer number (67968490).

Almost surely, 2^135936979 is an apocalyptic number.

135936979 is a deficient number, since it is larger than the sum of its proper divisors (1).

135936979 is an equidigital number, since it uses as much as digits as its factorization.

135936979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1377810, while the sum is 52.

The square root of 135936979 is about 11659.2014735144. The cubic root of 135936979 is about 514.1768721642.

The spelling of 135936979 in words is "one hundred thirty-five million, nine hundred thirty-six thousand, nine hundred seventy-nine".