135279987 has 8 divisors (see below), whose sum is σ = 180428736. Its totient is φ = 90158952.

The previous prime is 135279973. The next prime is 135280003. The reversal of 135279987 is 789972531.

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

It is not a de Polignac number, because 135279987 - 2⁶ = 135279923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135279967) 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, 11368 + ... + 19994.

It is an arithmetic number, because the mean of its divisors is an integer number (22553592).

Almost surely, 2^135279987 is an apocalyptic number.

135279987 is a deficient number, since it is larger than the sum of its proper divisors (45148749).

135279987 is an equidigital number, since it uses as much as digits as its factorization.

135279987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13857.

The product of its digits is 952560, while the sum is 51.

The square root of 135279987 is about 11630.9925199873. The cubic root of 135279987 is about 513.3471843211.

The spelling of 135279987 in words is "one hundred thirty-five million, two hundred seventy-nine thousand, nine hundred eighty-seven".