134866387 has 2 divisors, whose sum is σ = 134866388. Its totient is φ = 134866386.

The previous prime is 134866373. The next prime is 134866393. The reversal of 134866387 is 783668431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134866387 is a prime.

It is not a weakly prime, because it can be changed into another prime (134866357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67433193 + 67433194.

It is an arithmetic number, because the mean of its divisors is an integer number (67433194).

Almost surely, 2^134866387 is an apocalyptic number.

134866387 is a deficient number, since it is larger than the sum of its proper divisors (1).

134866387 is an equidigital number, since it uses as much as digits as its factorization.

134866387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 134866387 is about 11613.1988271966. The cubic root of 134866387 is about 512.8234873856.

The spelling of 134866387 in words is "one hundred thirty-four million, eight hundred sixty-six thousand, three hundred eighty-seven".