135404441 has 2 divisors, whose sum is σ = 135404442. Its totient is φ = 135404440.

The previous prime is 135404429. The next prime is 135404449. The reversal of 135404441 is 144404531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129504400 + 5900041 = 11380^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 135404441 - 2¹⁸ = 135142297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135404441.

It is not a weakly prime, because it can be changed into another prime (135404449) 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 as a sum of consecutive naturals, namely, 67702220 + 67702221.

It is an arithmetic number, because the mean of its divisors is an integer number (67702221).

Almost surely, 2^135404441 is an apocalyptic number.

It is an amenable number.

135404441 is a deficient number, since it is larger than the sum of its proper divisors (1).

135404441 is an equidigital number, since it uses as much as digits as its factorization.

135404441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 135404441 is about 11636.3413923793. The cubic root of 135404441 is about 513.5045580024.

Adding to 135404441 its reverse (144404531), we get a palindrome (279808972).

The spelling of 135404441 in words is "one hundred thirty-five million, four hundred four thousand, four hundred forty-one".