135913859 has 8 divisors (see below), whose sum is σ = 143183040. Its totient is φ = 128656296.

The previous prime is 135913853. The next prime is 135913867. The reversal of 135913859 is 958319531.

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

It is a de Polignac number, because none of the positive numbers 2^k-135913859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135913853) 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 7 ways as a sum of consecutive naturals, for example, 31952 + ... + 35954.

It is an arithmetic number, because the mean of its divisors is an integer number (17897880).

Almost surely, 2^135913859 is an apocalyptic number.

135913859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

135913859 is a deficient number, since it is larger than the sum of its proper divisors (7269181).

135913859 is a wasteful number, since it uses less digits than its factorization.

135913859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5809.

The product of its digits is 145800, while the sum is 44.

The square root of 135913859 is about 11658.2099397806. The cubic root of 135913859 is about 514.1477203141.

The spelling of 135913859 in words is "one hundred thirty-five million, nine hundred thirteen thousand, eight hundred fifty-nine".