135404443 has 4 divisors (see below), whose sum is σ = 135463648. Its totient is φ = 135345240.

The previous prime is 135404441. The next prime is 135404449. The reversal of 135404443 is 344404531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135404443 - 2¹ = 135404441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135404441) 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, 26028 + ... + 30793.

It is an arithmetic number, because the mean of its divisors is an integer number (33865912).

Almost surely, 2^135404443 is an apocalyptic number.

135404443 is a deficient number, since it is larger than the sum of its proper divisors (59205).

135404443 is an equidigital number, since it uses as much as digits as its factorization.

135404443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59204.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 135404443 is about 11636.3414783170. The cubic root of 135404443 is about 513.5045605307.

Adding to 135404443 its reverse (344404531), we get a palindrome (479808974).

The spelling of 135404443 in words is "one hundred thirty-five million, four hundred four thousand, four hundred forty-three".