135899867 has 2 divisors, whose sum is σ = 135899868. Its totient is φ = 135899866.

The previous prime is 135899861. The next prime is 135899891. The reversal of 135899867 is 768998531.

135899867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135899867 - 2⁴ = 135899851 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135899861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67949933 + 67949934.

It is an arithmetic number, because the mean of its divisors is an integer number (67949934).

Almost surely, 2^135899867 is an apocalyptic number.

135899867 is a deficient number, since it is larger than the sum of its proper divisors (1).

135899867 is an equidigital number, since it uses as much as digits as its factorization.

135899867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 56.

The square root of 135899867 is about 11657.6098322083. The cubic root of 135899867 is about 514.1300762911.

The spelling of 135899867 in words is "one hundred thirty-five million, eight hundred ninety-nine thousand, eight hundred sixty-seven".