133866079 has 2 divisors, whose sum is σ = 133866080. Its totient is φ = 133866078.

The previous prime is 133865989. The next prime is 133866097. The reversal of 133866079 is 970668331.

Together with next prime (133866097) 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 (970668331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133866079 - 2²¹ = 131768927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133866179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66933039 + 66933040.

It is an arithmetic number, because the mean of its divisors is an integer number (66933040).

Almost surely, 2^133866079 is an apocalyptic number.

133866079 is a deficient number, since it is larger than the sum of its proper divisors (1).

133866079 is an equidigital number, since it uses as much as digits as its factorization.

133866079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 133866079 is about 11570.0509506225. The cubic root of 133866079 is about 511.5524640995.

The spelling of 133866079 in words is "one hundred thirty-three million, eight hundred sixty-six thousand, seventy-nine".