135805899 has 8 divisors (see below), whose sum is σ = 185491152. Its totient is φ = 88328960.

The previous prime is 135805897. The next prime is 135805907. The reversal of 135805899 is 998508531.

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

It is a cyclic number.

It is not a de Polignac number, because 135805899 - 2¹ = 135805897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135805897) 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, 551934 + ... + 552179.

It is an arithmetic number, because the mean of its divisors is an integer number (23186394).

Almost surely, 2^135805899 is an apocalyptic number.

135805899 is a deficient number, since it is larger than the sum of its proper divisors (49685253).

135805899 is a wasteful number, since it uses less digits than its factorization.

135805899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104157.

The product of its (nonzero) digits is 388800, while the sum is 48.

The square root of 135805899 is about 11653.5788065298. The cubic root of 135805899 is about 514.0115505083.

The spelling of 135805899 in words is "one hundred thirty-five million, eight hundred five thousand, eight hundred ninety-nine".