135305859 has 16 divisors (see below), whose sum is σ = 204512000. Its totient is φ = 78882336.

The previous prime is 135305843. The next prime is 135305867. The reversal of 135305859 is 958503531.

It is a happy number.

It is not a de Polignac number, because 135305859 - 2⁴ = 135305843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135305059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90559 + ... + 92040.

It is an arithmetic number, because the mean of its divisors is an integer number (12782000).

Almost surely, 2^135305859 is an apocalyptic number.

135305859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

135305859 is a deficient number, since it is larger than the sum of its proper divisors (69206141).

135305859 is a wasteful number, since it uses less digits than its factorization.

135305859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182634.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 135305859 is about 11632.1046676859. The cubic root of 135305859 is about 513.3799077417.

The spelling of 135305859 in words is "one hundred thirty-five million, three hundred five thousand, eight hundred fifty-nine".