135559449 has 9 divisors (see below), whose sum is σ = 195858559. Its totient is φ = 90349680.

The previous prime is 135559429. The next prime is 135559451. The reversal of 135559449 is 944955531.

The square root of 135559449 is 11643.

It is a perfect power (a square), and thus also a powerful number.

135559449 is a `hidden beast` number, since 1 + 3 + 55 + 594 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 85433049 + 50126400 = 9243^2 + 7080^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 135559449 - 2¹³ = 135551257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135559409) 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 8 ways as a sum of consecutive naturals, for example, 32989 + ... + 36869.

Almost surely, 2^135559449 is an apocalyptic number.

135559449 is the 11643-rd square number.

135559449 is the 5822-nd centered octagonal number.

It is an amenable number.

135559449 is a deficient number, since it is larger than the sum of its proper divisors (60299110).

135559449 is an frugal number, since it uses more digits than its factorization.

135559449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7768 (or 3884 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The cubic root of 135559449 is about 513.7004328189.

The spelling of 135559449 in words is "one hundred thirty-five million, five hundred fifty-nine thousand, four hundred forty-nine".