135869787 has 12 divisors (see below), whose sum is σ = 196672320. Its totient is φ = 90387888.

The previous prime is 135869759. The next prime is 135869821. The reversal of 135869787 is 787968531.

It is not a de Polignac number, because 135869787 - 2⁷ = 135869659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135829787) 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 11 ways as a sum of consecutive naturals, for example, 11448 + ... + 20069.

It is an arithmetic number, because the mean of its divisors is an integer number (16389360).

Almost surely, 2^135869787 is an apocalyptic number.

135869787 is a deficient number, since it is larger than the sum of its proper divisors (60802533).

135869787 is a wasteful number, since it uses less digits than its factorization.

135869787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32002 (or 31999 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 135869787 is about 11656.3196164141. The cubic root of 135869787 is about 514.0921410716.

The spelling of 135869787 in words is "one hundred thirty-five million, eight hundred sixty-nine thousand, seven hundred eighty-seven".