135995904 has 120 divisors (see below), whose sum is σ = 428334192. Its totient is φ = 41195520.

The previous prime is 135995897. The next prime is 135995929. The reversal of 135995904 is 409599531.

It is a happy number.

135995904 is a `hidden beast` number, since 1 + 3 + 59 + 9 + 590 + 4 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 135995904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49347 + ... + 52029.

Almost surely, 2^135995904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135995904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214167096).

135995904 is an abundant number, since it is smaller than the sum of its proper divisors (292338288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135995904 is a wasteful number, since it uses less digits than its factorization.

135995904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718 (or 2699 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 135995904 is about 11661.7281738171. The cubic root of 135995904 is about 514.2511553497.

It can be divided in two parts, 13599 and 5904, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 135995904 in words is "one hundred thirty-five million, nine hundred ninety-five thousand, nine hundred four".