135279493 has 2 divisors, whose sum is σ = 135279494. Its totient is φ = 135279492.

The previous prime is 135279481. The next prime is 135279527. The reversal of 135279493 is 394972531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112402404 + 22877089 = 10602^2 + 4783^2 .

It is a cyclic number.

It is not a de Polignac number, because 135279493 - 2⁹ = 135278981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135279593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67639746 + 67639747.

It is an arithmetic number, because the mean of its divisors is an integer number (67639747).

Almost surely, 2^135279493 is an apocalyptic number.

It is an amenable number.

135279493 is a deficient number, since it is larger than the sum of its proper divisors (1).

135279493 is an equidigital number, since it uses as much as digits as its factorization.

135279493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 204120, while the sum is 43.

The square root of 135279493 is about 11630.9712836031. The cubic root of 135279493 is about 513.3465594595.

The spelling of 135279493 in words is "one hundred thirty-five million, two hundred seventy-nine thousand, four hundred ninety-three".