135504749 has 2 divisors, whose sum is σ = 135504750. Its totient is φ = 135504748.

The previous prime is 135504709. The next prime is 135504757. The reversal of 135504749 is 947405531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81775849 + 53728900 = 9043^2 + 7330^2 .

It is a cyclic number.

It is not a de Polignac number, because 135504749 - 2⁸ = 135504493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135504709) 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 as a sum of consecutive naturals, namely, 67752374 + 67752375.

It is an arithmetic number, because the mean of its divisors is an integer number (67752375).

Almost surely, 2^135504749 is an apocalyptic number.

It is an amenable number.

135504749 is a deficient number, since it is larger than the sum of its proper divisors (1).

135504749 is an equidigital number, since it uses as much as digits as its factorization.

135504749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 135504749 is about 11640.6507120521. The cubic root of 135504749 is about 513.6313285889.

The spelling of 135504749 in words is "one hundred thirty-five million, five hundred four thousand, seven hundred forty-nine".