135047879 has 2 divisors, whose sum is σ = 135047880. Its totient is φ = 135047878.

The previous prime is 135047827. The next prime is 135047897. The reversal of 135047879 is 978740531.

Together with next prime (135047897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (978740531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135047879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135047279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67523939 + 67523940.

It is an arithmetic number, because the mean of its divisors is an integer number (67523940).

Almost surely, 2^135047879 is an apocalyptic number.

135047879 is a deficient number, since it is larger than the sum of its proper divisors (1).

135047879 is an equidigital number, since it uses as much as digits as its factorization.

135047879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 135047879 is about 11621.0102400781. The cubic root of 135047879 is about 513.0534227151.

The spelling of 135047879 in words is "one hundred thirty-five million, forty-seven thousand, eight hundred seventy-nine".