135422393 has 2 divisors, whose sum is σ = 135422394. Its totient is φ = 135422392.

The previous prime is 135422389. The next prime is 135422423. The reversal of 135422393 is 393224531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116035984 + 19386409 = 10772^2 + 4403^2 .

It is a cyclic number.

It is not a de Polignac number, because 135422393 - 2² = 135422389 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135422333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67711196 + 67711197.

It is an arithmetic number, because the mean of its divisors is an integer number (67711197).

Almost surely, 2^135422393 is an apocalyptic number.

It is an amenable number.

135422393 is a deficient number, since it is larger than the sum of its proper divisors (1).

135422393 is an equidigital number, since it uses as much as digits as its factorization.

135422393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 32.

The square root of 135422393 is about 11637.1127432882. The cubic root of 135422393 is about 513.5272505778.

The spelling of 135422393 in words is "one hundred thirty-five million, four hundred twenty-two thousand, three hundred ninety-three".