135044779 has 4 divisors (see below), whose sum is σ = 135069984. Its totient is φ = 135019576.

The previous prime is 135044747. The next prime is 135044827. The reversal of 135044779 is 977440531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 977440531 = 4003 ⋅244177.

It is a cyclic number.

It is not a de Polignac number, because 135044779 - 2⁵ = 135044747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135044729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1012 + ... + 16465.

It is an arithmetic number, because the mean of its divisors is an integer number (33767496).

Almost surely, 2^135044779 is an apocalyptic number.

135044779 is a deficient number, since it is larger than the sum of its proper divisors (25205).

135044779 is an equidigital number, since it uses as much as digits as its factorization.

135044779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25204.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 135044779 is about 11620.8768602029. The cubic root of 135044779 is about 513.0494970018.

The spelling of 135044779 in words is "one hundred thirty-five million, forty-four thousand, seven hundred seventy-nine".