135779443 has 4 divisors (see below), whose sum is σ = 135945648. Its totient is φ = 135613240.

The previous prime is 135779437. The next prime is 135779461. The reversal of 135779443 is 344977531.

135779443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344977531 = 1693 ⋅203767.

It is a cyclic number.

It is not a de Polignac number, because 135779443 - 2⁹ = 135778931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135779443.

It is not an unprimeable number, because it can be changed into a prime (135779243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81871 + ... + 83512.

It is an arithmetic number, because the mean of its divisors is an integer number (33986412).

Almost surely, 2^135779443 is an apocalyptic number.

135779443 is a deficient number, since it is larger than the sum of its proper divisors (166205).

135779443 is an equidigital number, since it uses as much as digits as its factorization.

135779443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166204.

The product of its digits is 317520, while the sum is 43.

The square root of 135779443 is about 11652.4436492952. The cubic root of 135779443 is about 513.9781705820.

The spelling of 135779443 in words is "one hundred thirty-five million, seven hundred seventy-nine thousand, four hundred forty-three".