135267389 has 2 divisors, whose sum is σ = 135267390. Its totient is φ = 135267388.

The previous prime is 135267383. The next prime is 135267401. The reversal of 135267389 is 983762531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87422500 + 47844889 = 9350^2 + 6917^2 .

It is an emirp because it is prime and its reverse (983762531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135267389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135267383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67633694 + 67633695.

It is an arithmetic number, because the mean of its divisors is an integer number (67633695).

Almost surely, 2^135267389 is an apocalyptic number.

It is an amenable number.

135267389 is a deficient number, since it is larger than the sum of its proper divisors (1).

135267389 is an equidigital number, since it uses as much as digits as its factorization.

135267389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 135267389 is about 11630.4509370875. The cubic root of 135267389 is about 513.3312486094.

The spelling of 135267389 in words is "one hundred thirty-five million, two hundred sixty-seven thousand, three hundred eighty-nine".