135440856 has 32 divisors (see below), whose sum is σ = 376225200. Its totient is φ = 45146880.

The previous prime is 135440821. The next prime is 135440863. The reversal of 135440856 is 658044531.

It is a happy number.

135440856 is a `hidden beast` number, since 135 + 440 + 85 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 135440856.

It is a congruent number.

It is an unprimeable number.

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, 313305 + ... + 313736.

Almost surely, 2^135440856 is an apocalyptic number.

It is an amenable number.

135440856 is an abundant number, since it is smaller than the sum of its proper divisors (240784344).

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

135440856 is a wasteful number, since it uses less digits than its factorization.

135440856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627056 (or 627046 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 135440856 is about 11637.9059972144. The cubic root of 135440856 is about 513.5505870009.

The spelling of 135440856 in words is "one hundred thirty-five million, four hundred forty thousand, eight hundred fifty-six".