135988841 has 8 divisors (see below), whose sum is σ = 139708800. Its totient is φ = 132288160.

The previous prime is 135988837. The next prime is 135988861. The reversal of 135988841 is 148889531.

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 135988841 - 2² = 135988837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135988861) 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, 10100 + ... + 19338.

It is an arithmetic number, because the mean of its divisors is an integer number (17463600).

Almost surely, 2^135988841 is an apocalyptic number.

It is an amenable number.

135988841 is a deficient number, since it is larger than the sum of its proper divisors (3719959).

135988841 is an equidigital number, since it uses as much as digits as its factorization.

135988841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9639.

The product of its digits is 276480, while the sum is 47.

The square root of 135988841 is about 11661.4253416982. The cubic root of 135988841 is about 514.2422525846.

The spelling of 135988841 in words is "one hundred thirty-five million, nine hundred eighty-eight thousand, eight hundred forty-one".