135040444 has 24 divisors (see below), whose sum is σ = 294634368. Its totient is φ = 52613040.

The previous prime is 135040441. The next prime is 135040453. The reversal of 135040444 is 444040531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135040441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218914 + ... + 219529.

It is an arithmetic number, because the mean of its divisors is an integer number (12276432).

Almost surely, 2^135040444 is an apocalyptic number.

135040444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

135040444 is an abundant number, since it is smaller than the sum of its proper divisors (159593924).

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

135040444 is a wasteful number, since it uses less digits than its factorization.

135040444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438465 (or 438463 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 135040444 is about 11620.6903409393. The cubic root of 135040444 is about 513.0440072342.

Adding to 135040444 its reverse (444040531), we get a palindrome (579080975).

The spelling of 135040444 in words is "one hundred thirty-five million, forty thousand, four hundred forty-four".