135936779 has 8 divisors (see below), whose sum is σ = 152303088. Its totient is φ = 120238560.

The previous prime is 135936751. The next prime is 135936791. The reversal of 135936779 is 977639531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135936779 - 2¹² = 135932683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135936719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166592 + ... + 167405.

It is an arithmetic number, because the mean of its divisors is an integer number (19037886).

Almost surely, 2^135936779 is an apocalyptic number.

135936779 is a deficient number, since it is larger than the sum of its proper divisors (16366309).

135936779 is a wasteful number, since it uses less digits than its factorization.

135936779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334045.

The product of its digits is 1071630, while the sum is 50.

The square root of 135936779 is about 11659.1928965945. The cubic root of 135936779 is about 514.1766199998.

The spelling of 135936779 in words is "one hundred thirty-five million, nine hundred thirty-six thousand, seven hundred seventy-nine".