135005447 has 2 divisors, whose sum is σ = 135005448. Its totient is φ = 135005446.

The previous prime is 135005419. The next prime is 135005459. The reversal of 135005447 is 744500531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135005447 - 2¹⁶ = 134939911 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135005477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67502723 + 67502724.

It is an arithmetic number, because the mean of its divisors is an integer number (67502724).

Almost surely, 2^135005447 is an apocalyptic number.

135005447 is a deficient number, since it is larger than the sum of its proper divisors (1).

135005447 is an equidigital number, since it uses as much as digits as its factorization.

135005447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 135005447 is about 11619.1844378166. The cubic root of 135005447 is about 512.9996833465. Note that the first 3 decimals are identical.

Adding to 135005447 its reverse (744500531), we get a palindrome (879505978).

The spelling of 135005447 in words is "one hundred thirty-five million, five thousand, four hundred forty-seven".