135866229 has 8 divisors (see below), whose sum is σ = 181220832. Its totient is φ = 90544560.

The previous prime is 135866219. The next prime is 135866231. The reversal of 135866229 is 922668531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135866229 - 2²³ = 127477621 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135866219) 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 in 7 ways as a sum of consecutive naturals, for example, 3987 + ... + 16959.

It is an arithmetic number, because the mean of its divisors is an integer number (22652604).

Almost surely, 2^135866229 is an apocalyptic number.

It is an amenable number.

135866229 is a deficient number, since it is larger than the sum of its proper divisors (45354603).

135866229 is a wasteful number, since it uses less digits than its factorization.

135866229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16467.

The product of its digits is 155520, while the sum is 42.

The square root of 135866229 is about 11656.1669943425. The cubic root of 135866229 is about 514.0876535500.

The spelling of 135866229 in words is "one hundred thirty-five million, eight hundred sixty-six thousand, two hundred twenty-nine".