135404777 has 4 divisors (see below), whose sum is σ = 135444036. Its totient is φ = 135365520.

The previous prime is 135404743. The next prime is 135404783. The reversal of 135404777 is 777404531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122235136 + 13169641 = 11056^2 + 3629^2 .

It is a cyclic number.

It is not a de Polignac number, because 135404777 - 2⁶ = 135404713 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 135404777.

It is not an unprimeable number, because it can be changed into a prime (135404077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13898 + ... + 21539.

It is an arithmetic number, because the mean of its divisors is an integer number (33861009).

Almost surely, 2^135404777 is an apocalyptic number.

It is an amenable number.

135404777 is a deficient number, since it is larger than the sum of its proper divisors (39259).

135404777 is an equidigital number, since it uses as much as digits as its factorization.

135404777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39258.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 135404777 is about 11636.3558298979. The cubic root of 135404777 is about 513.5049827482.

The spelling of 135404777 in words is "one hundred thirty-five million, four hundred four thousand, seven hundred seventy-seven".