135641444 has 12 divisors (see below), whose sum is σ = 237552000. Its totient is φ = 67769448.

The previous prime is 135641431. The next prime is 135641449. The reversal of 135641444 is 444146531.

It is a self number, because there is not a number n which added to its sum of digits gives 135641444.

It is not an unprimeable number, because it can be changed into a prime (135641449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6524 + ... + 17715.

It is an arithmetic number, because the mean of its divisors is an integer number (19796000).

Almost surely, 2^135641444 is an apocalyptic number.

It is an amenable number.

135641444 is a deficient number, since it is larger than the sum of its proper divisors (101910556).

135641444 is a wasteful number, since it uses less digits than its factorization.

135641444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25642 (or 25640 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 135641444 is about 11646.5206821608. The cubic root of 135641444 is about 513.8039848710.

Adding to 135641444 its reverse (444146531), we get a palindrome (579787975).

The spelling of 135641444 in words is "one hundred thirty-five million, six hundred forty-one thousand, four hundred forty-four".