135369449 has 2 divisors, whose sum is σ = 135369450. Its totient is φ = 135369448.

The previous prime is 135369383. The next prime is 135369463. The reversal of 135369449 is 944963531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132411049 + 2958400 = 11507^2 + 1720^2 .

It is a cyclic number.

It is not a de Polignac number, because 135369449 - 2¹⁶ = 135303913 is a prime.

It is not a weakly prime, because it can be changed into another prime (135369349) 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, 67684724 + 67684725.

It is an arithmetic number, because the mean of its divisors is an integer number (67684725).

Almost surely, 2^135369449 is an apocalyptic number.

It is an amenable number.

135369449 is a deficient number, since it is larger than the sum of its proper divisors (1).

135369449 is an equidigital number, since it uses as much as digits as its factorization.

135369449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 44.

The square root of 135369449 is about 11634.8377298525. The cubic root of 135369449 is about 513.4603199173.

The spelling of 135369449 in words is "one hundred thirty-five million, three hundred sixty-nine thousand, four hundred forty-nine".